Cross-listings

hep-ph/0703243 [abs, ps, pdf, other] :: Title: Has PVLAS Detected the Chameleon?
Authors: Ph. Brax, C. van de Bruck, A.-C. Davis
Comments: 4 pages

We show that the PVLAS anomaly can be understood using a chameleon field whose properties depend on the environment. We find that, assuming a runaway bare potential V(phi) and a universal coupling to matter, the chameleon potential is such that the scalar field can act as dark energy. Moreover the chameleon field model is compatible with the CAST results, fifth force experiments and cosmology.
hep-th/0703190 [abs, ps, pdf, other] :: Title: Charting the Landscape of Modified Gravity
Authors: Nemanja Kaloper, Derrick Kiley
Comments: 47 LaTeX pages, 3 .eps figures

We explore brane induced gravity on a 3-brane in six locally flat dimensions. To regulate the short distance singularities in the brane core, we resolve the thin brane by a cylindrical 4-brane, with the geometry of 4D Minkowski $\times$ a circle, which has an axion flux to cancel the vacuum pressure in the compact direction. We discover a large diversity of possible solutions controlled by the axion flux, as governed by its boundary conditions. Hence brane induced gravity models really give rise to a {\it landscape} of vacua, at least semiclassically. For sub-critical tensions, the crossover scale, below which gravity may look 4D, and the effective 4D gravitational coupling are sensitive to vacuum energy. This shows how the vacuum energy problem manifests in brane induced gravity: instead of tuning the 4D curvature, generically one must tune the crossover scale. On the other hand, in the near-critical limit, branes live inside very deep throats which efficiently compactify the angular dimension. In there, 4D gravity first changes to $5D$, and only later to $6D$. The crossover scale saturates at the gravitational see-saw scale, independent of the tension. Using the fields of static loops on a wrapped brane, we check the perturbative description of long range gravity below the crossover scale. In sub-critical cases the scalars are strongly coupled already at the crossover scale even in the vacuum, because the brane bending is turned on by the axion flux. Near the critical limit, linearized perturbation theory remains under control below the crossover scale, and we find that linearized gravity around the vacuum looks like a scalar-tensor theory.

Replacements

astro-ph/0510081 [abs, ps, pdf, other] :: Title: Generating long streams of $1/f^alpha$ noise
Authors: S. Plaszczynski (LAL)
Comments: Accepted by Fluctuation and Noise Letters as a Topical Review. More references and finer mathematics
Note: replaced with revised version Fri, 23 Mar 2007 14:43:40 GMT (34kb)
astro-ph/0607341 [abs, ps, pdf, other] :: Title: Astrophysical Effects of Scalar Dark Matter Miniclusters
Authors: Kathryn M. Zurek, Craig J. Hogan, Thomas R. Quinn (UW, Physics and Astronomy Departments)
Comments: 13 pages, 12 figures. Replaced to reflect published version
Journal-ref: Phys.Rev. D75 (2007) 043511
Note: replaced with revised version Fri, 23 Mar 2007 19:27:37 GMT (768kb)
astro-ph/0609722 [abs, ps, pdf, other] :: Title: Present-Day Carbon Abundances of Early-Type Stars
Authors: M.F. Nieva, N. Przybilla
Comments: 5 pages, 3 figures. Refereed contribution to Nuclei in the Cosmos IX, Proceedings of Science, PoS(NIC-IX)150, accepted. Minor changes have been included (It can also be downloaded from PoS: this http URL)
Note: replaced with revised version Fri, 23 Mar 2007 16:06:23 GMT (87kb)
astro-ph/0611128 [abs, ps, pdf, other] :: Title: A New Population of High Redshift Short-Duration Gamma-Ray Bursts
Authors: E. Berger, D.B. Fox, P.A. Price, E. Nakar, A. Gal-Yam, D.E. Holz, B.P. Schmidt, A. Cucchiara, S.B. Cenko, S.R. Kulkarni, A.M. Soderberg, D.A. Frail, B.E. Penprase, A. Rau, E. Ofek, S.J. Bell Burnell, P.B. Cameron, L.L. Cowie, M.A. Dopita, I. Hook, B.A. Peterson, Ph. Podsiadlowski, K.C. Roth, R.E. Rutledge, S.S. Sheppard, A. Songaila
Comments: Version accepted to ApJ; includes additional short GRBs and redshifts
Note: replaced with revised version Fri, 23 Mar 2007 05:09:17 GMT (993kb)
astro-ph/0612066 [abs, ps, pdf, other] :: Title: COMBO-17 measurements of the effect of environment on the type-dependent galaxy luminosity function
Authors: S. Phleps, C. Wolf, J.A. Peacock, K. Meisenheimer, E. van Kampen
Comments: 10 pages, 8 figures, accepted for publication by A&A
Note: replaced with revised version Fri, 23 Mar 2007 11:56:43 GMT (111kb)
astro-ph/0612103 [abs, ps, pdf, other] :: Title: A Robust Estimator of the Small-Scale Galaxy Correlation Function
Authors: Nikhil Padmanabhan, Martin White, Daniel J. Eisenstein
Comments: 5 pages, 4 figures, matches version accepted by MNRAS
Note: replaced with revised version Fri, 23 Mar 2007 06:14:27 GMT (37kb)
astro-ph/0612471 [abs, ps, pdf, other] :: Title: Robust Machine Learning Applied to Astronomical Datasets II: Quantifying Photometric Redshifts for Quasars Using Instance-Based Learning
Authors: Nicholas M. Ball (1 and 2), Robert J. Brunner (1 and 2), Adam D. Myers (1 and 2), Natalie E. Strand (3), Stacey L. Alberts (1), David Tcheng (2), Xavier Llorà (2) ((1) Department of Astronomy, University of Illinois at Urbana-Champaign, (2) National Center for Supercomputing Applications, (3) Department of Physics, University of Illinois at Urbana-Champaign)
Comments: 8 pages, 5 figures, textual changes to match ApJ accepted version, uses emulateapj.cls
Note: replaced with revised version Fri, 23 Mar 2007 01:32:18 GMT (134kb)
astro-ph/0612700 [abs, ps, pdf, other] :: Title: Missing Thermal Energy of the Intracluster Medium
Authors: Niayesh Afshordi (ITC, Harvard), Yen-Ting Lin (Princeton/Catolica), Daisuke Nagai (CalTech), Alastair J. R. Sanderson (Birmingham)
Comments: 9 pages, 4 figures, references added, a mismatch between X-ray and SZ properties of simulated clusters is corrected, marginally increasing the significance of missing baryon fraction, Accepted for publication in MNRAS
Note: replaced with revised version Fri, 23 Mar 2007 15:30:38 GMT (75kb)
astro-ph/0701330 [abs, ps, pdf, other] :: Title: UV habitable zones around M stars
Authors: Andrea P. Buccino, Guillermo A. Lemarchand, Pablo J. D. Mauas
Comments: 5 pages, 3 figures, submited to A&A
Note: replaced with revised version Thu, 22 Mar 2007 20:44:35 GMT (32kb)
astro-ph/0701541 [abs, ps, pdf, other] :: Title: The haloes of merger remnants
Authors: P.J. McMillan, E. Athanassoula, W. Dehnen
Comments: 10 pages, 11 figures, MNRAS accepted, edited to correct equation 4
Note: replaced with revised version Fri, 23 Mar 2007 15:16:09 GMT (433kb)
astro-ph/0701582 [abs, ps, pdf, other] :: Title: NMAGIC: Fast Parallel Implementation of a Chi-Squared-Made-to-Measure Algorithm for Modelling Observational Data
Authors: Flavio de Lorenzi (1,2), Victor Debattista (3), Ortwin Gerhard (1), Niranjan Sambhus (2) ((1) MPE Garching, (2) Astron. Institut Univ. Basel, (3) Astronomy Department, Univ. of Washington, Seattle)
Comments: 20 pages, 23 figures, accepted for MNRAS
Journal-ref: Mon.Not.Roy.Astron.Soc. 376 (2007) 71-88
Note: replaced with revised version Fri, 23 Mar 2007 11:17:00 GMT (931kb)
astro-ph/0702045 [abs, ps, pdf, other] :: Title: The Cosmic Ray Distribution in Sagittarius B
Authors: Roland M. Crocker, David Jones, Raymond J. Protheroe, Juergen Ott, Ron Ekers, Fulvio Melia, Todor Stanev, Anne Green
Comments: 45 pages, 5 figures; Minor revisions - version accepted for publication in ApJ
Note: replaced with revised version Fri, 23 Mar 2007 02:12:09 GMT (546kb)
astro-ph/0702223 [abs, ps, pdf, other] :: Title: Fitting CMB data with cosmic strings and inflation
Authors: Neil Bevis, Mark Hindmarsh, Martin Kunz, Jon Urrestilla
Comments: 4 pages, 3 figures, 1 table; typo and reference correction
Note: replaced with revised version Fri, 23 Mar 2007 13:13:07 GMT (37kb)
astro-ph/0703266 [abs, ps, pdf, other] :: Title: Correlating anomalies of the microwave sky: The Good, the Evil and the Axis
Authors: Aleksandar Rakic, Dominik J. Schwarz
Comments: 9 pages, 6 figures, 1 table; revtex4; v2: added references
Note: replaced with revised version Fri, 23 Mar 2007 17:12:31 GMT (266kb)
astro-ph/0703568 [abs, ps, pdf, other] :: Title: The Cepheid Phase Lag Revisited
Authors: Robert Szabo, J. Robert Buchler, Justin Bartee
Comments: 11 pages, 8 figures, submitted to ApJ, larger figures, (black and white version available from 2nd author's website)
Note: replaced with revised version Fri, 23 Mar 2007 05:50:48 GMT (381kb)
gr-qc/0609039 [abs, ps, pdf, other] :: Title: Cosmic Duality in Quintom Universe
Authors: Yi-Fu Cai, Hong Li, Yun-Song Piao, Xinmin Zhang
Comments: 5 pages, 3 figures
Journal-ref: Phys. Lett. B646 (2007) 141-144
Note: replaced with revised version Fri, 23 Mar 2007 12:26:27 GMT (81kb)
hep-ex/0702006 [abs, ps, pdf, other] :: Title: An improved limit on the axion-photon coupling from the CAST experiment
Authors: CAST Collaboration
Comments: 24 pages, 8 figures, 1 table, to be submitted to JCAP; v2: minor changes in the exclusion plot; v3: minor changes to match accepted version
Note: replaced with revised version Fri, 23 Mar 2007 13:41:02 GMT (111kb)
hep-th/0606223 [abs, ps, pdf, other] :: Title: Trapped Quintessential Inflation in the context of Flux Compactifications
Authors: J.C. Bueno Sanchez, K. Dimopoulos
Comments: 32 pages, 3 figures, JCAP format
Note: replaced with revised version Fri, 23 Mar 2007 19:40:40 GMT (551kb)
hep-th/0611221 [abs, ps, pdf, other] :: Title: Hurdles for Recent Measures in Eternal Inflation
Authors: Anthony Aguirre, Steven Gratton, Matthew C Johnson
Comments: 15 PRD-style pages, 5 figures, expanded discussion of measures in Sec. II, added references
Note: replaced with revised version Fri, 23 Mar 2007 17:55:10 GMT (219kb)

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Cross-listings

quant-ph/0703214 [abs, ps, pdf, other] :: Title: Comment on ``Analytical and numerical verification of the Nernst heat theorem for metals''
Authors: G.L.Klimchitskaya, V.M.Mostepanenko
Comments: 6 pages
Subj-class: Quantum Physics; Statistical Mechanics

Recently, H{\o}ye, Brevik, Ellingsen and Aarseth (quant-ph/0703174) claimed that the use of the Drude dielectric function leads to zero Casimir entropy at zero temperature in accordance with Nernst's theorem. We demonstrate that their proof is not applicable to metals with perfect crystal lattices having no impurities. Thus there is no any contradiction with previous results in the literature proving that the Drude dielectric function violates the Nernst theorem for the Casimir entropy in the case of perfect crystal lattices. We also indicate mistakes in the coefficients of their asymptotic expressions for metals with impurities.

Replacements

astro-ph/0509734 [abs, ps, pdf, other] :: Title: Dust and the far-UV spectral energy distribution of quasars
Authors: Luc Binette, Yair Krongold, Gladis Magris Crestini, Jose Antonio de Diego
Comments: In proceedings of Triggering Relativistic Jets, in Cozumel in 2005, to appear in accompanying CD of RevMex A&A Conf Series, Vol. 27 (2007)
Note: replaced with revised version Mon, 26 Mar 2007 19:58:21 GMT (96kb)
astro-ph/0606281 [abs, ps, pdf, other] :: Title: Dark Matter Halos with Cores from Hierarchical Structure Formation
Authors: Louis E. Strigari, Manoj Kaplinghat, James S. Bullock
Comments: 5 pages, 1 figure. Matches PRD published version
Journal-ref: PRD 75, 061303(R) (2007)
Note: replaced with revised version Mon, 26 Mar 2007 16:05:07 GMT (16kb)
astro-ph/0606679 [abs, ps, pdf, other] :: Title: Influence of protons on the capture of electrons by 7Be in the Sun
Authors: V. B. Belyaev, M. Tater, E. Truhlik
Comments: 10 pages, 4 figures, 1 table; version published in Phys. Rev. C 75, 034608 (2007)
Note: replaced with revised version Mon, 26 Mar 2007 13:19:43 GMT (22kb)
astro-ph/0610419 [abs, ps, pdf, other] :: Title: Cosmic string loops in the expanding universe
Authors: Ken D. Olum, Vitaly Vanchurin
Comments: 9 pages, 5 figures, RevTeX; v2: expansion and clarification, improved figures; v3: reference updated, typos fixed
Note: replaced with revised version Mon, 26 Mar 2007 15:11:52 GMT (24kb)
astro-ph/0611295 [abs, ps, pdf, other] :: Title: The Peculiar SN 2005hk: Do Some Type Ia Supernovae Explode as Deflagrations?
Authors: M. M. Phillips, W. Li, J. A. Frieman, S. I. Blinnikov, D. DePoy, J. L. Prieto, P. Milne, C. Contreras, G. Folatelli, N. Morrell, M. Hamuy, N. B. Suntzeff, M. Roth, S. Gonzalez, W. Krzeminski, A. V. Filippenko, W. L. Freedman, R. Chornock, S. Jha, B. F. Madore, S. E. Persson, C. R. Burns, P. Wyatt, D. Murphy, R. J. Foley, M. Ganeshalingam, F. J. D. Serduke, K. Krisciunas, B. Bassett, A. Becker, B. Dilday, J. Eastman, P. M. Garnavich, J. Holtzman, R. Kessler, H. Lampeitl, J. Marriner, S. Frank, J. L. Marshall, G. Miknaitis, M. Sako, D. P. Schneider, K. van der Heyden, Naoki Yasuda
Comments: Accepted by PASP, to appear in April 2007 issue, 63 pages, 16 figures, 11 tables
Note: replaced with revised version Mon, 26 Mar 2007 18:00:25 GMT (642kb)
astro-ph/0612383 [abs, ps, pdf, other] :: Title: Observation of very high energy gamma-rays from the AGN 1ES 2344+514 in a low emission state with the MAGIC telescope
Authors: J. Albert et al. (MAGIC Collaboration)
Comments: 7 pages, 7 figures, minor revisions, accepted for publication by ApJ
Note: replaced with revised version Sat, 24 Mar 2007 14:57:30 GMT (192kb)
astro-ph/0701140 [abs, ps, pdf, other] :: Title: Modeling the Stellar Populations in the Canis Major Over-Density: the Relation Between the Old and Young Populations
Authors: Jelte T. A. de Jong, David J. Butler, Hans-Walter Rix, Andrew E. Dolphin, David Martinez-Delgado
Comments: 15 pages, 11 figures, (2 additional figures + some textual changes wrt previous version), accepted for publication in Astrophysical Journal
Note: replaced with revised version Mon, 26 Mar 2007 13:35:54 GMT (374kb)
astro-ph/0701358 [abs, pdf] :: Title: Dark Matter in an n-Space Expanding Universe
Authors: Mario Rabinowitz
Comments: 22 pages
Note: replaced with revised version Sat, 24 Mar 2007 17:19:51 GMT (95kb)
astro-ph/0701365 [abs, ps, pdf, other] :: Title: Weak Lensing of Galaxy Clusters in MOND
Authors: Ryuichi Takahashi, Takeshi Chiba
Comments: 11 pages, 6 figures, revised version, added references, submitted to ApJ
Note: replaced with revised version Mon, 26 Mar 2007 04:35:55 GMT (46kb)
astro-ph/0701446 [abs, ps, pdf, other] :: Title: Constraints on the unified dark energy-dark matter model from latest observational data
Authors: Puxun Wu, Hongwei Yu
Comments: 12 pages, 4 figures,accepted for publication in JCAP
Journal-ref: JCAP03,015(2007)
Note: replaced with revised version Sat, 24 Mar 2007 01:44:23 GMT (197kb)
astro-ph/0701596 [abs, ps, pdf, other] :: Title: Cosmological magnetic fields from nonlinear effects
Authors: Tsutomu Kobayashi, Roy Maartens, Tetsuya Shiromizu, Keitaro Takahashi
Comments: 8 pages; v2: Estimate of the magnetic field computed; minor corrections and improvements
Note: replaced with revised version Sat, 24 Mar 2007 15:35:00 GMT (15kb)
astro-ph/0701633 [abs, ps, pdf, other] :: Title: Automatic quenching of high energy gamma-ray sources by synchrotron photons
Authors: L. Stawarz, J.G. Kirk
Comments: 11 pages, 2 figures included. Revised version, accepted for publication in ApJL
Note: replaced with revised version Mon, 26 Mar 2007 17:52:19 GMT (52kb)
astro-ph/0701874 [abs, ps, pdf, other] :: Title: The Progenitors of Short Gamma-Ray Bursts
Authors: William H. Lee, Enrico Ramirez-Ruiz
Comments: 76 pages, 26 figures, review article to appear in the GRB Focus Issue of New Journal of Physics
Journal-ref: New J.Phys. 9 (2007) 17
Note: replaced with revised version Mon, 26 Mar 2007 18:46:02 GMT (1109kb)
astro-ph/0702056 [abs, ps, pdf, other] :: Title: Observations of Running Waves in a Sunspot Chromosphere
Authors: D. Shaun Bloomfield, Andreas Lagg, Sami K. Solanki (Max Planck Institut fuer Sonnensystemforschung, Katlenburg-Lindau)
Comments: 6 pages, 4 figures. In press, "Physics of Chromospheric Plasmas" (Coimbra), ASP 368, 239 (2007)
Note: replaced with revised version Mon, 26 Mar 2007 08:42:08 GMT (1063kb)
astro-ph/0702162 [abs, ps, pdf, other] :: Title: The solar oxygen crisis: Probably not the last word
Authors: H. Socas-Navarro A. A. Norton
Comments: To appear in ApJ Letters, 2 color figures, 1 B/W figure. Correction (3/23/07): An error in the NLTE calculation has been found in the original submission. It has been fixed in this revision, which corresponds to the final accepted version
Note: replaced with revised version Mon, 26 Mar 2007 16:50:09 GMT (138kb)
astro-ph/0702206 [abs, ps, pdf, other] :: Title: N-body Models of Rotating Globular Clusters
Authors: Andreas Ernst, Patrick Glaschke, Jose Fiestas, Andreas Just, Rainer Spurzem
Comments: 16 pages, 17 figures, accepted by MNRAS
Note: replaced with revised version Mon, 26 Mar 2007 12:36:19 GMT (1157kb)
astro-ph/0702297 [abs, ps, pdf, other] :: Title: New abundance determinations in z < 1.5 QSO absorbers: seven sub-DLAs and one DLA
Authors: Joseph D. Meiring (1), James T. Lauroesch (2), Varsha P. Kulkarni (1), Celine Peroux (3), Pushpa Khare (4), Donald G. York (5), Arlin P.S. Crotts (6) ((1) University of South Carolina, (2) University of Louisville, (3) ESO, (4) Utkal University, (5) University of Chicago, (6) Columbia University)
Comments: 15 pages, 15 Figures, Accepted by MNRAS, updated references and authors
Note: replaced with revised version Mon, 26 Mar 2007 18:24:50 GMT (196kb)
astro-ph/0703319 [abs, ps, pdf, other] :: Title: The nature of the Wolf-Rayet galaxy Mrk 209 from photoionisation models
Authors: Enrique Perez-Montero (LATT-OMP, UAM), Angeles I. Diaz (UAM)
Comments: 13 pages, 14 figures, in press in MNRAS, LaTeX: typos added, references removed
Note: replaced with revised version Mon, 26 Mar 2007 10:54:17 GMT (112kb)
astro-ph/0703603 [abs, ps, pdf, other] :: Title: A new equation for the mid-plane potential of power law disks
Authors: J.-M. Huré, F. Hersant
Comments: 5 pages, 1 figure, accepted for publication in A&A
Note: replaced with revised version Mon, 26 Mar 2007 11:44:42 GMT (69kb)
astro-ph/0703610 [abs, pdf] :: Title: Color Intensity Projections: A simple way to display changes in astronomical images
Authors: Keith S Cover, Frank J Lagerwaard, Suresh Senan
Comments: 9 pages, 2 figures. Accepted for publication in Publications of the Astronomical Society of the Pacific. The quality of figure 1 been improved from the previous posted version
Note: replaced with revised version Mon, 26 Mar 2007 11:01:26 GMT (900kb)
gr-qc/0612027 [abs, ps, pdf, other] :: Title: Voids of dark energy
Authors: Sourish Dutta, Irit Maor
Comments: 9 pages, 13 figures, revised version matches published version
Journal-ref: Pysical Review D 75, 063507 (2007)
Note: replaced with revised version Fri, 23 Mar 2007 20:37:37 GMT (116kb)
hep-th/0609214 [abs, ps, pdf, other] :: Title: Universal Reconnection of Non-Abelian Cosmic Strings
Authors: Minoru Eto, Koji Hashimoto, Giacomo Marmorini, Muneto Nitta, Keisuke Ohashi, Walter Vinci
Comments: 5 pages; v2 references added; v3 the final version
Journal-ref: Phys.Rev.Lett. 98 (2007) 091602
Note: replaced with revised version Sun, 25 Mar 2007 15:52:40 GMT (12kb)
hep-th/0702098 [abs, ps, pdf, other] :: Title: Casimir effect in rugby-ball type flux compactifications
Authors: Emilio Elizalde, Masato Minamitsuji, Wade Naylor
Comments: 13 pages, 6 figures, accepted for publication in PRD
Note: replaced with revised version Sat, 24 Mar 2007 15:53:13 GMT (30kb)
nlin.CD/0609061 [abs, ps, pdf, other] :: Title: "Stokes' Second Problem in High Frequency Limit. Application to Micro (Nano)- Resonators
Authors: V. Yakhot, C. Colosqui
Subj-class: Chaotic Dynamics; Soft Condensed Matter; Fluid Dynamics
Note: replaced with revised version Mon, 26 Mar 2007 16:42:14 GMT (28kb)

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Cross-listings

gr-qc/0703122 [abs, ps, pdf, other] :: Title: Cosmography: Extracting the Hubble series from the supernova data
Authors: Celine Cattoen (Victoria University of Wellington), Matt Visser (Victoria University of Wellington)
Comments: 38 pages, 6 figures, 7 tables, uses iopart.cls

We perform a number of inter-related cosmographic fits to the legacy05 and gold06 supernova datasets. We pay particular attention to the influence of both statistical and systematic uncertainties, and also to the extent to which the choice of distance scale and manner of representing the redshift scale affect the cosmological parameters. While the "preponderance of evidence" certainly suggests an accelerating universe, we would argue that (based on the supernova data) this conclusion is not currently supported "beyond reasonable doubt". As part of the analysis we develop two particularly transparent graphical representations of the redshift-distance relation -- representations in which acceleration versus deceleration reduces to the question of whether the graph slopes up or down.
Turning to the details of the cosmographic fits, three issues in particular concern us: First, the fitted value for the deceleration parameter changes significantly depending on whether one performs a chi^2 fit to the luminosity distance, proper motion distance, angular diameter distance, or other suitable distance surrogate. Second, the fitted value for the deceleration parameter changes significantly depending on whether one uses the traditional redshift variable z, or what we shall argue is on theoretical grounds an improved parameterization y=z/(1+z). Third, the published estimates for systematic uncertainties are sufficiently large that they certainly impact on, and to a large extent undermine, the usual purely statistical tests of significance. We conclude that the case for an accelerating universe is considerably less watertight than commonly believed.
gr-qc/0703126 [abs, ps, pdf, other] :: Title: Exact Friedmann Solutions in Higher-Order Gravity Theories
Authors: Timothy Clifton
Comments: 24 pages, 6 figures

We find the general behaviour of homogeneous and isotropic cosmological models in some fourth-order theories of gravity. Explicit, exact, general solutions are given for both empty universes and those filled with a perfect fluid. For the vacuum case, solutions are found with closed, open and flat geometries, whilst the perfect fluid solutions are all spatially flat. Both early and late-time limits are studied, and attractor behaviour towards simple power-law expansion is identified. Multiple solutions to the same theories, with the same matter content and topology are found. It is shown that these solutions exhibit great variety in their evolution.
hep-th/0703215 [abs, ps, pdf, other] :: Title: Cosmic 21-cm Fluctuations as a Probe of Fundamental Physics
Authors: Matthew Kleban, Kris Sigurdson, Ian Swanson
Comments: 8 pages, 2 figures

Fluctuations in high-redshift cosmic 21-cm radiation provide a new window for observing unconventional effects of high-energy physics in the primordial spectrum of density perturbations. In scenarios for which the initial state prior to inflation is modified at short distances, or for which deviations from scale invariance arise during the course of inflation, the cosmic 21-cm power spectrum can in principle provide more precise measurements of exotic effects on fundamentally different scales than corresponding observations of cosmic microwave background anisotropies.

Replacements

astro-ph/0601549 [abs, ps, pdf, other] :: Title: Comparison of 13CO Line and Far-Infrared Continuum Emission as a Diagnostic of Dust and Molecular Gas Physical Conditions: III. Systematic Effects and Scientific Implications
Authors: W. F. Wall
Comments: The work of Schnee et al. 2006 is relevant here. This is now mentioned in the Discussion and in the Conclusions. In the third version, I've corrected a few typos and slightly changed the emphasis on the cold gas/dust. In the version of March 2007, I've fixed a few typos and updated a few references
Note: replaced with revised version Mon, 26 Mar 2007 21:10:24 GMT (455kb)
astro-ph/0603351 [abs, ps, pdf, other] :: Title: Thermal Stability of White Dwarfs Accreting Hydrogen-rich Matter and Progenitors of Type Ia Supernovae
Authors: Ken'ichi Nomoto (U. Tokyo), Hideyuki Saio (Tohoku U.), Mariko Kato (Keio U.), Izumi Hachisu (U. Tokyo)
Comments: to appear in the Astrophysical Journal, 8 pages including 5 figures
Note: replaced with revised version Tue, 27 Mar 2007 13:09:50 GMT (44kb)
astro-ph/0605288 [abs, ps, pdf, other] :: Title: On-axis spectroscopy of the host galaxies of 20 optically luminous quasars at z~0.3
Authors: G. Letawe, P. Magain, F. Courbin, P. Jablonka, K. Jahnke, G. Meylan, L. Wisotzki
Comments: 30 pages, 19 figures, 9 tables, accepted for publication in MNRAS, major revision
Note: replaced with revised version Tue, 27 Mar 2007 14:03:57 GMT (677kb)
astro-ph/0609547 [abs, ps, pdf, other] :: Title: The Scale Dependence of Halo and Galaxy Bias: Effects in Real Space
Authors: Robert E. Smith (UPenn), Roman Scoccimarro (NYU), Ravi K. Sheth (UPenn)
Comments: Halo power spectra at z=1 and z=2 added. Matches published version: PRD. 75, 063512 (2007)
Journal-ref: Phys.Rev. D75 (2007) 063512
Note: replaced with revised version Tue, 27 Mar 2007 18:03:13 GMT (211kb)
astro-ph/0610590 [abs, ps, pdf, other] :: Title: A direct consequence of the expansion of space?
Authors: Michal Chodorowski (Copernicus Center)
Comments: 6 MN-style pages, no figures; matches the version accepted for publication in MNRAS
Note: replaced with revised version Tue, 27 Mar 2007 15:01:39 GMT (13kb)
astro-ph/0611416 [abs, ps, pdf, other] :: Title: Variational Integrators for the Gravitational N-Body Problem
Authors: Will M. Farr, Edmund Bertschinger
Comments: 31 pages, 8 figures. v2: Revised individual-timestepping description, expanded comparison with other methods, corrected error in predictor equation. ApJ, in press
Note: replaced with revised version Tue, 27 Mar 2007 01:34:54 GMT (36kb)
astro-ph/0611819 [abs, ps, pdf, other] :: Title: Revisiting the Black Hole Masses of Soft X-ray-Selected Active Galactic Nuclei
Authors: Linda C. Watson (1), Smita Mathur (1), Dirk Grupe (2) ((1) Ohio State University, (2) Pennsylvania State University)
Comments: Accepted for publication in AJ; 9 pages, 4 figures, 1 table
Note: replaced with revised version Tue, 27 Mar 2007 14:24:19 GMT (27kb)
astro-ph/0612168 [abs, ps, pdf, other] :: Title: Dynamics of a magnetized Bianchi I universe with vacuum energy
Authors: Emma J. King, Peter Coles
Comments: 13 pages, 4 figures. Added references, corrected equations & extended discussion. To be published in CQG
Note: replaced with revised version Tue, 27 Mar 2007 12:05:42 GMT (124kb)
astro-ph/0701848 [abs, ps, pdf, other] :: Title: The modified Newtonian dynamics-MOND-and its implications for new physics
Authors: Jacob D. Bekenstein
Comments: Pedagogical introduction to MOND and review of modern developments. To appear shortly in Contemporary Physics; LaTeX with 6 figures, 15 pages
Journal-ref: Contemporary Physics 47, 387 (2006)
Note: replaced with revised version Tue, 27 Mar 2007 07:08:57 GMT (809kb)
astro-ph/0702182 [abs, ps, pdf, other] :: Title: Nonlinear curvature perturbations in an exactly soluble model of multi-component slow-roll inflation
Authors: Misao Sasaki
Comments: 4 pages, no figure, typos corrected, references added, final version to be published in CQG
Note: replaced with revised version Tue, 27 Mar 2007 07:41:03 GMT (6kb)
astro-ph/0702380 [abs, ps, pdf, other] :: Title: Angular momentum transport and proton-alpha differential streaming in the solar wind
Authors: Bo Li, Shadia Rifai Habbal, Xing Li
Comments: 10 pages, 6 figures, ApJ in press (v661n2, June 1 2007 issue), this version differs the previous one in that now it uses the emulateapj package
Note: replaced with revised version Tue, 27 Mar 2007 11:37:32 GMT (113kb)
astro-ph/0702383 [abs, ps, pdf, other] :: Title: Propagation of non-WKB Alfven waves in a multicomponent solar wind with differential ion flow
Authors: Bo Li, Xing Li
Comments: 12 pages, 6 figures, ApJ in press (v661n2, June 1 2007 issue), this version differs the previous one in that now it uses the emulateapj package
Note: replaced with revised version Tue, 27 Mar 2007 11:48:56 GMT (269kb)
astro-ph/0702721 [abs, pdf] :: Title: Measuring Night-Sky Brightness with a Wide-Field CCD Camera
Authors: D.M. Duriscoe, C.B. Luginbuhl, C.A. Moore
Comments: 22 pages, 16 figures; replaced missing/duplicated pages
Journal-ref: Publ.Astron.Soc.Pac. 119 (2007) 192-213
Note: replaced with revised version Tue, 27 Mar 2007 17:22:44 GMT (282kb)
astro-ph/0703154 [abs, ps, pdf, other] :: Title: Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01
Authors: AMS-01 Collaboration
Comments: 20 pages, Latex, 7 .eps figures
Journal-ref: Phys.Lett. B646 (2007) 145-154
Note: replaced with revised version Tue, 27 Mar 2007 11:27:29 GMT (1531kb)
astro-ph/0703238 [abs, ps, pdf, other] :: Title: A model of the light curves of Gamma-Ray Bursts
Authors: W. H. Lei, D. X. Wang, B. P. Gong, C. Y. Huang
Comments: 8 pages, 8 figures. Accepted for publication in A&A
Note: replaced with revised version Tue, 27 Mar 2007 12:23:11 GMT (1150kb)
astro-ph/0703329 [abs, ps, pdf, other] :: Title: The Meso-Structured Magnetic Atmosphere -- A Stochastic Polarized Radiative Transfer Approach
Authors: T.A. Carroll, M. Kopf
Comments: accepted by A&A
Note: replaced with revised version Tue, 27 Mar 2007 19:19:35 GMT (77kb)
astro-ph/0703513 [abs, ps, pdf, other] :: Title: Discovery of a Pulsar Candidate Associated with the TeV Gamma-ray Source HESS J1813-178
Authors: E. V. Gotthelf, D. J. Helfand (Columbia University)
Comments: 3 Pages, 3 Figures. Latex, aipproc.cls. To be published in "The Proceedings of the First International GLAST Symposium" (Held Febuary 5-8, 2007, Stanford Univ., USA), AIP, Eds. S. Ritz, P.F. Michelson, and C. Meegan. Updated coordinates
Note: replaced with revised version Mon, 26 Mar 2007 23:56:00 GMT (269kb)
astro-ph/0703551 [abs, ps, pdf, other] :: Title: High-quality Spectrophotometry of the Planetary Nebula in the Fornax dSph
Authors: A.Y. Kniazev, E.K. Grebel, S.A. Pustilnik, A.G. Pramskij
Comments: 9 pages, 3 figures, accepted for publication by A&A
Note: replaced with revised version Tue, 27 Mar 2007 00:35:41 GMT (78kb)
astro-ph/0703657 [abs, ps, pdf, other] :: Title: Lenticular Galaxy Formation - Possible Luminosity Dependence
Authors: Sudhanshu Barway (1), Ajit Kembhavi (1), Yogesh Wadadekar (2), C.D. Ravikumar (3), Y. D. Mayya (4) (1- Inter University center for Astronomy and Astrophysics (IUCAA), Pune-India; 2- Department of Astrophysical Sciences, Princeton University, Princeton; 3- Department of Physics, University of Calicut, Kerala-India; 4- Instituto Nacional de Astrofisica, Optica y Electronica, Puebla-Mexico)
Comments: Accepted for publication in ApJ Letters, 4 pages, 3 figures; minor typos are corrected
Note: replaced with revised version Tue, 27 Mar 2007 05:10:38 GMT (35kb)
gr-qc/0608100 [abs, ps, pdf, other] :: Title: Large scale effective theory for cosmological bounces
Authors: Martin Bojowald
Comments: 5 pages, 1 figure; v2: more details on effective equations
Note: replaced with revised version Tue, 27 Mar 2007 07:53:22 GMT (14kb)
gr-qc/0610047 [abs, ps, pdf, other] :: Title: Testing General Relativity with Atom Interferometry
Authors: Savas Dimopoulos, Peter W. Graham, Jason M. Hogan, Mark A. Kasevich
Comments: 4 pages, 1 figure; v2: Minor changes made for publication
Subj-class: General Relativity and Quantum Cosmology; Atomic Physics
Journal-ref: Phys.Rev.Lett. 98:111102,2007
Note: replaced with revised version Tue, 27 Mar 2007 01:05:59 GMT (58kb)
hep-th/0606223 [abs, ps, pdf, other] :: Title: Trapped Quintessential Inflation in the context of Flux Compactifications
Authors: J.C. Bueno Sanchez, K. Dimopoulos
Comments: 32 pages, 3 figures, JCAP format. Forgotten acknowledgements included; otherwise identical to previous version
Note: replaced with revised version Tue, 27 Mar 2007 11:58:48 GMT (551kb)

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gr-qc/0703130 [abs, ps, pdf, other] :: Title: A new theorem for black holes
Authors: Yuan K. Ha
Comments: Contribution to the XXVI International Colloquium on Group Theoretical Methods in Physics, New York, June 26-30, 2006

A new theorem for black holes is established. The mass of a black hole depends on where the observer is. The horizon mass theorem states that for all black holes: neutral, charged or rotating, the horizon mass is always twice the irreducible mass observed at infinity. The horizon mass theorem is crucial for understanding the occurrence of Hawking radiation. Without black hole radiation, the Second Law of Thermodynamics is lost.
gr-qc/0703132 [abs, ps, pdf, other] :: Title: A no-go theorem for polytropic spheres in Palatini f(R) gravity
Authors: Enrico Barausse, Thomas P. Sotiriou, John C. Miller
Comments: 4 pages, 1 figure

Non-vacuum static spherically-symmetric solutions in Palatini f(R) gravity are examined. It is shown that for generic choices of f(R), there are natural matter configurations for which no satisfactory physical solution of the field equations can be found within this framework, apart from in the special case of General Relativity, implying that Palatini f(R) gravity does not give physically acceptable alternatives to General Relativity.
gr-qc/0703133 [abs, ps, pdf, other] :: Title: A note on cosmology in a brane model
Authors: Mikhail Z. Iofa
Comments: 10 pages LaTex

We study some aspects of cosmology in a five-dimensional model with matter, radiation and cosmological constant on the four-dimensional brane(s) and without matter in the bulk. The action of the model does not contain explicit curvature terms on the the brane(s). We obtain solution of the generalized Friedman equation as a function of dimensionless ratio of the scales $b^2 = \frac{\mu M^2_{pl}}{M^3}$ ($\mu$ is the scale in the warp factor in the 5D metric which is taken of order $10^{3\div 4}GeV$, $M\geq\mu$ is the $5D$ fundamental scale). We assume that there is a hierarchy between 4D and 5D scales. For $b^2 =O(1)$ the age of the Universe is found comparable, but below the current experimental value, for $b^2\gg 1$ it is obtained much smaller than the experimental bound. Because time dependence of temperature of the Universe in the 5D model is different from that in the standard cosmology, the abundance of ${}^4$He produced in the primordial nucleosynthesis is obtained about three times more than in the standard cosmology.
hep-th/0703173 [abs, ps, pdf, other] :: Title: String Theory, Space-Time Non-Commutativity and Structure Formation
Authors: Robert Brandenberger (McGill University)
Comments: 12 pages, 2 figures, based on an invited talk at the 21st Nishinomiya-Yukawa Memorial Symposium, Nov. 11 - 16, 2006, to be publ. in the proceedings (Prog. Theor. Phys. Suppl.)

A natural consequence of string theory is a non-commutative structure of space-time on microscopic scales. The existence of a minimal length, and a modification of the effective field theory are two consequences of this space-time non-commutativity. I will first explore some consequences of the modifications of the effective field theory for structure formation in the context of an inflationary cosmology. Then, I will explore the possibility that the existence of a minimal length will lead to a structure formation scenario different from inflation. Specifically, I will discuss recent work on string gas cosmology.
nucl-th/0703086 [abs, ps, pdf, other] :: Title: Predictions of Alpha Decay Half lives of Heavy and Superheavy Elements
Authors: C. Samanta, P. Roy Chowdhury, D.N. Basu
Comments: 18 pages including 5 figures and 1 table

Theoretical estimates for the lifetimes of several isotopes of heavy elements with Z=102-120 are presented by calculating the quantum mechanical tunneling probability in a WKB framework and using microscopic nucleus-nucleus potential obtained by folding the densities of interacting nuclei with the DDM3Y effective nuclear interaction. The alpha-decay half lives calculated in this formalism using the experimental Q-values are in good agreement over a wide range of experimental data. Half lives are also calculated using Q-values extracted from two mass formulae. The Viola-Seaborg-Sobiczewski (VSS) estimates of alpha-decay half lives with the same Q-values are presented for comparison. The half life calculations are found to be quite sensitive to the choice of Q-values. Comparison with the experimental data delineates the inadequacies of older mass predictions in the domain of heavy and superheavy elements as compared to the newer one by Muntian et al., and highlights necessity of a more accurate mass formula which can predict Q-values with even higher precision.

Replacements

astro-ph/0505329 [abs, ps, pdf, other] :: Title: Smoothing Supernova Data to Reconstruct the Expansion History of the Universe and its Age
Authors: Arman Shafieloo, Ujjaini Alam, Varun Sahni, Alexei A. Starobinsky
Comments: 16 pages, 12 figures. Section 5 restructured, main conclusions unchanged. Post journal publication version
Journal-ref: Mon.Not.Roy.Astron.Soc. 366 (2006) 1081-1095
Note: replaced with revised version Wed, 28 Mar 2007 10:11:42 GMT (128kb)
astro-ph/0511400 [abs, ps, pdf, other] :: Title: Star formation at very low metallicity. II: On the insignificance of metal-line cooling during the early stages of gravitational collapse
Authors: A.-K. Jappsen (1, 2), S. C. O. Glover (2, 4), R. S. Klessen (2, 3), M.-M. Mac Low (4) ((1) Canadian Institute for Theoretical Astrophysics, (2) Astrophysikalisches Institut Potsdam, (3) Zentrum fuer Astronomie der Universitaet Heidelberg, (4) American Museum of Natural History, New York)
Comments: 38 pages, 8 figures, AASTex. Accepted by ApJ. Corrected typos and references
Note: replaced with revised version Wed, 28 Mar 2007 17:55:04 GMT (65kb)
astro-ph/0609755 [abs, ps, pdf, other] :: Title: An Alternative Approach to Holographic Dark Energy
Authors: Fergus Simpson
Comments: 4 pages, 1 figure, revised version matches published version
Journal-ref: JCAP03(2007)016
Note: replaced with revised version Tue, 27 Mar 2007 20:46:00 GMT (24kb)
astro-ph/0701660 [abs, ps, pdf, other] :: Title: kHz QPO pairs expose the neutron star of Circinus X-1
Authors: S. Boutloukos, M. van der Klis, D. Altamirano, M. Klein-Wolt, R. Wijnands
Comments: 3 pages, 2 figures - one from astro-ph/0608089 (ApJ 653, 1435, 2006) in corrected form, to appear in the proceedings of the 11th Marcel Grossman meeting, improved wording, added reference
Note: replaced with revised version Wed, 28 Mar 2007 16:48:40 GMT (35kb)
astro-ph/0702282 [abs, ps, pdf, other] :: Title: Structured FRW universe based on LTB junctions along the past light cone
Authors: Sh. Khosravi, E. Kourkchi, R. Mansouri, Y. Akrami
Comments: 26 pages, 19 figures
Note: replaced with revised version Wed, 28 Mar 2007 09:15:58 GMT (204kb)
astro-ph/0702491 [abs, ps, pdf, other] :: Title: Understanding the Chemical Complexity in Circumstellar Envelopes of C-rich AGB Stars: the Case of IRC +10216
Authors: M. Agundez, J. Cernicharo, J. R. Pardo, J. P. Fonfria Exposito, M. Guelin, E. D. Tenenbaum, L. M. Ziurys, A. J. Apponi
Comments: 4 pages, 4 figures; to appear in Astrophysics and Space Science, special issue of "Science with ALMA: a new era for Astrophysics" conference, November, 13-17 2006, ed. R. Bachiller
Note: replaced with revised version Wed, 28 Mar 2007 15:48:59 GMT (182kb)
astro-ph/0702739 [abs, ps, pdf, other] :: Title: Scaling relations and mass calibration of the X-ray luminous galaxy clusters at z~0.2: XMM-Newton observations
Authors: Y.-Y. Zhang, A. Finoguenov, H. Boehringer, J.-P. Kneib, G. P. Smith, O. Czoske, G. Soucail
Comments: 38 pages, 25 figures, 6 tables, A&A, in press (references updated)
Note: replaced with revised version Wed, 28 Mar 2007 18:10:21 GMT (987kb)
astro-ph/0703547 [abs, ps, pdf, other] :: Title: Carbon in the pregalactic epoch and the search for the first haloes
Authors: A. Lipovka, J. Saucedo, N. M. Lipovka
Comments: 7 pages, 2 figures. In V2 some references added
Note: replaced with revised version Tue, 27 Mar 2007 22:22:01 GMT (136kb)
astro-ph/0703664 [abs, ps, pdf, other] :: Title: Imaging and Spectroscopy of Ultra Steep Spectrum Radio Sources
Authors: Carlos G. Bornancini, Carlos De Breuck, Wim de Vries, Steve Croft, Wil van Breugel, Huub Rottgering, Dante Minniti
Comments: Accepted for publication in MNRAS, 14 pages including 44 PostScript figures and 4 tables. Version with all figures available from this http URL
Note: replaced with revised version Wed, 28 Mar 2007 01:31:16 GMT (1228kb)
astro-ph/0703690 [abs, ps, pdf, other] :: Title: Spectral Properties From Lyman-alpha to H-alpha For An Essentially Complete Sample of Quasars I: Data
Authors: Zhaohui Shang (1 and 2), Beverley J. Wills (3), D. Wills (3), Michael S. Brotherton (2) ((1) Tianjin Normal University, China, (2) University of Wyoming, USA, (3) University of Texas at Austin, USA)
Comments: 41 pages, 10 figures, 13 tables. Accepted by AJ
Note: replaced with revised version Wed, 28 Mar 2007 04:59:29 GMT (1132kb)
astro-ph/0703696 [abs, ps, pdf, other] :: Title: A new code for automatic determination of equivalent widths: Automatic Routine for line Equivalent widths in stellar Spectra (ARES)
Authors: S. G. Sousa (1,2,6), N. C. Santos (1,3,4), G. Israelian (5), M. Mayor (3), M. J. P. F. G. Monteiro (2,6) ((1) - Centro de Astronomia e Astrofisica da Universidade de Lisboa, Observatorio Astronomico de Lisboa, Lisbon, Portugal; (2) - Centro de Astrofisica da Universidade do Porto, Porto, Portugal; (3) - Observatoire de Geneve, Sauverny, Switzerland; (4) - Centro de Geofisica de Evora, Evora, Portugal; (5) - Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain; (6) - Departamento de Matematica Aplicada, Faculdade de Ciencias da Universidade do Porto, Portugal)
Comments: 10 pages, 9 figures, Accepted for publication on A&A
Note: replaced with revised version Wed, 28 Mar 2007 14:01:49 GMT (249kb)
hep-th/0611198 [abs, ps, pdf, other] :: Title: String-inspired Gauss-Bonnet gravity reconstructed from the universe expansion history and yielding the transition from matter dominance to dark energy
Authors: Guido Cognola, Emilio Elizalde, Shin'ichi Nojiri, Sergei D. Odintsov, Sergio Zerbini
Comments: LaTeX20 pages, 4 figures, version to apear in PRD
Note: replaced with revised version Wed, 28 Mar 2007 10:48:30 GMT (181kb)
hep-th/0703101 [abs, ps, pdf, other] :: Title: Scale-invariance in expanding and contracting universes from two-field models
Authors: Andrew J. Tolley, Daniel H. Wesley
Comments: 22 pages, typos corrected
Note: replaced with revised version Tue, 27 Mar 2007 21:36:51 GMT (23kb)
hep-th/0703115 [abs, ps, pdf, other] :: Title: Transient Observers and Variable Constants, or Repelling the Invasion of the Boltzmann's Brains
Authors: S. Carlip
Comments: 4 pages, LaTeX; v2: added references
Note: replaced with revised version Tue, 27 Mar 2007 23:54:56 GMT (6kb)

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gr-qc/0610067 [abs, ps, pdf, other] :: Title: Modified teleparallel gravity: inflation without inflaton
Authors: Rafael Ferraro, Franco Fiorini
Comments: 4 pages, 2 figures. Version to be published in Physical Review D

Born-Infeld strategy to smooth theories having divergent solutions is applied to teleparallel equivalent of General Relativity. Differing from other theories of modified gravity, modified teleparallelism leads to second order equations, since teleparallel Lagrangian only contains first derivatives of the vierbein. We show that Born-Infeld-modified teleparallelism solves the particle horizon problem in a spatially flat FRW universe by providing an initial exponential expansion without resorting to an inflaton field.
gr-qc/0703140 [abs, ps, pdf, other] :: Title: A mathematical analysis of the evolution of perturbations in a modified Chaplygin gas model
Authors: Sandro Silva e Costa, Maximiliano Ujevic, Alesandro Ferreira dos Santos
Comments: revtex, 9 pages

One approach in modern cosmology consists in supposing that dark matter and dark energy are different manifestations of a single `quartessential' fluid. Following such idea, this work presents a study of the evolution of perturbations of density in a flat cosmological model with a modified Chaplygin gas acting as a single component. Our goal is to obtain properties of the model which can be used to distinguish it from another cosmological models which have the same solutions for the general evolution of the scale factor of the universe, without the construction of the power spectrum. Our analytical results, which alone can be used to uniquely characterize the specific model studied in our work, show that the evolution of the density contrast can be seen as composed by a spheroidal wave function. We also present a numerical analysis which clearly indicates as one interesting feature of the model the appearence of peaks in the evolution of the density constrast.
hep-ph/0703246 [abs, ps, pdf, other] :: Title: Dark energy, the colored anti-de Sitter vacuum, and LHC phenomenology
Authors: Dejan Stojkovic, Glenn D. Starkman, Reijiro Matsuo
Comments: 4 pages, 1 figure

We study the possibility that the current accelerated expansion of the universe is driven by the vacuum energy density of a colored scalar field which is responsible for a phase transition in which the gauge $SU(3)_c$ symmetry breaks. We show that if we are stuck in a $SU(3)_c$-preserving false vacuum, then $SU(3)_c$ symmetry breaking can be accommodated without violating any experimental QCD bounds or bounds from cosmological observations. Moreover, unless there is an unnatural fine-tuning beyond the usual cosmological constant fine-tuning, the true vacuum state of the universe is anti-de Sitter. The model can likely be tested at the LHC. A possible (though not neccessary) consequence of the model is the existence of fractionally charged massive hadrons. The model can be embedded in supersymmetric theories where massive colored scalar fields appear naturally, thus reopening previously closed regions of SUSY parameter space.
hep-th/0703265 [abs, ps, pdf, other] :: Title: A new PPN parameter to test Chern-Simons gravity
Authors: Stephon Alexander, Nicolas Yunes
Comments: 4 pages, submitted to PRL

We study Chern-Simons (CS) gravity in the parameterized post-Newtonian (PPN) framework through weak-field solutions of the modified field equations for a perfect fluid source. We discover that CS gravity possesses the same PPN parameters as general relativity, except for the inclusion of a new term, proportional both to the CS coupling parameter and the curl of the PPN vector potentials. This new term encodes the key physical effect of CS gravity in the weak-field limit, leading to a modification of frame dragging and, thus, the Lense-Thirring contribution to gyroscopic precession. We provide a physical interpretation for the new term, as well as an estimate of the size of this effect relative to the general relativistic Lense-Thirring prediction. This correction to frame dragging might be used in experiments, such as Gravity Probe B and lunar ranging, to place bounds on the CS coupling parameter, as well as other intrinsic parameters of string theory.

Replacements

astro-ph/0611664 [abs, ps, pdf, other] :: Title: Unified Model for Inflation and Dark Matter
Authors: Gabriel Zsembinszki
Comments: 16 pages, 2 figures, revtex4; more references added, minor changes in the text
Note: replaced with revised version Thu, 29 Mar 2007 12:52:29 GMT (1142kb)
astro-ph/0701070 [abs, ps, pdf, other] :: Title: Chandra and XMM-Newton discovery of the transient X-ray pulsar in the nearby spiral galaxy NGC2403
Authors: Sergey Trudolyubov (IGPP/UCR, IKI), William Priedhorsky (LANL), France Cordova (UCR)
Comments: Accepted for publication in ApJ. 14 pages, 6 figures, uses emulateapj style. Updated to match the accepted version
Note: replaced with revised version Thu, 29 Mar 2007 00:50:56 GMT (508kb)
astro-ph/0702240 [abs, ps, pdf, other] :: Title: First Space-Based Microlens Parallax Measurement: Spitzer Observations of OGLE-2005-SMC-001
Authors: Subo Dong, A. Udalski, A. Gould, W. T. Reach, G. W. Christie, A. F. Boden, D. P. Bennett, G. Fazio, K. Griest, M. K. Szymanski, M. Kubiak, I. Soszynski, G. Pietrzynski, O. Szewczyk, L. Wyrzykowski, K. Ulaczyk, T. Wieckowski, B. Paczynski, D. L. DePoy, R. W. Pogge, G. W. Preston, I. B. Thompson, B. M. Patten
Comments: 38 pages, 6 figures. Accepted by ApJ
Note: replaced with revised version Thu, 29 Mar 2007 02:35:39 GMT (199kb)
astro-ph/0702641 [abs, ps, pdf, other] :: Title: The Distribution of Recoil Velocities from Merging Black Holes
Authors: Jeremy D. Schnittman, Alessandra Buonanno (U. Maryland)
Comments: 4 pages, 5 figures, submitted to ApJL; v2: improved Eqn (3) and related discussion
Note: replaced with revised version Thu, 29 Mar 2007 15:21:33 GMT (34kb)
astro-ph/0703218 [abs, ps, pdf, other] :: Title: Physical conditions in the neutral interstellar medium at z=2.43 toward Q2348-011
Authors: P. Noterdaeme, P. Petitjean, R. Srianand, C. Ledoux, F. Le Petit
Comments: 13 pages, 14 figures, accepted for publication in A&A
Note: replaced with revised version Thu, 29 Mar 2007 16:06:46 GMT (281kb)
astro-ph/0703512 [abs, ps, pdf, other] :: Title: Significant Gamma Lines from Inert Higgs Dark Matter
Authors: Michael Gustafsson, Erik Lundstrom, Lars Bergstrom, Joakim Edsjo
Comments: 4 pages, 3 figures. Submitted to PRL. Minor improvements
Note: replaced with revised version Thu, 29 Mar 2007 19:52:00 GMT (337kb)
astro-ph/0703547 [abs, ps, pdf, other] :: Title: Carbon in the pregalactic epoch and the search for the first haloes
Authors: A. Lipovka, J. Saucedo, N. M. Lipovka
Comments: 7 pages, 2 figures. In V2 some references added. V3 figures adjusted
Note: replaced with revised version Thu, 29 Mar 2007 01:34:02 GMT (136kb)
astro-ph/0703694 [abs, pdf] :: Title: Is the Cosmic "Axis of Evil" due to a Large-Scale Magnetic Field
Authors: Michael J. Longo
Comments: Slightly revised text explaining how the multipoles are formed
Note: replaced with revised version Thu, 29 Mar 2007 16:42:28 GMT (207kb)
gr-qc/0602056 [abs, ps, pdf, other] :: Title: Periapsis and gravitomagnetic precessions of stellar orbits in Kerr and Kerr-de Sitter black hole spacetimes
Authors: G. V. Kraniotis
Comments: LaTeX file, 46 pages, typos fixed, substantial changes, version published in Classical and Quantum Gravity, Vol 24 (2007) 1775-1808
Journal-ref: Class. Quantum Grav. 24 (2007) 1775-1808
Note: replaced with revised version Thu, 29 Mar 2007 08:30:26 GMT (33kb)
gr-qc/0611110 [abs, ps, pdf, other] :: Title: Kerr-Sen dilaton-axion black hole lensing in the strong deflection limit
Authors: Galin N. Gyulchev, Stoytcho S. Yazadjiev
Comments: 31 pages, 17 figures; V2 references added, some typos corrected, V3 references added, language corrections, V4 table added, minor technical corrections
Journal-ref: Phys.Rev. D75 (2007) 023006
Note: replaced with revised version Thu, 29 Mar 2007 12:48:13 GMT (368kb)
hep-th/0612230 [abs, ps, pdf, other] :: Title: p-adic Inflation
Authors: Neil Barnaby, Tirthabir Biswas, James M. Cline
Comments: 34 pages, 4 figures; altered normalization of inflaton fluctuations which changes the parameter values for which the model is compatible with CMB observations, one figure removed, added references and clarifying comments
Note: replaced with revised version Thu, 29 Mar 2007 15:40:43 GMT (73kb)

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e-mail To: physics@arXiv.org, Subject: subscribe
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