Journal of Cosmology and Astroparticle Physics latest papers http://stacks.iop.org/1475-7516 Journal of Cosmology and Astroparticle Physics (JCAP) has fast established itself as essential reading for the astrophysical community. JCAP covers all aspects of cosmology and particle astrophysics and encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal has already published key results on the implications of the latest CMB data for particle physics and cosmology, inflation, dark matter and dark energy phenomenology, solutions to the solar neutrino problem, and the use of supernova data to test cosmological models. JCAP is the second title from the partnership between IOP and SISSA. en-gb Copyright © IOP Publishing 2010 Thu, 01 Jan 1970 00:00:00 GMT Thu, 01 Jan 1970 00:00:00 GMT http://syndication.iop.org/about/ custserv@iop.org (Customer Services) Journal of Cosmology and Astroparticle Physics http://images.iop.org/website-logos/ejs_logo.png http://stacks.iop.org/ Holographic dark energy with varying gravitational constant in Hořava-Lifshitz cosmology http://stacks.iop.org/1475-7516/2010/i=02/a=010?rss=2.0 Author(s): M.R. Setare and Mubasher Jamil<br>Affiliation(s): Department of Physics, University of Kurdistan, Pasdaran Ave., Sanandaj, Iran; Center for Advanced Mathematics and Physics, National University of Sciences and Technology, Rawalpindi, 46000, Pakistan Mon, 08 Feb 2010 00:00:00 GMT A covariant and gauge invariant formulation of the cosmological ``backreaction'' http://stacks.iop.org/1475-7516/2010/i=02/a=009?rss=2.0 Author(s): M. Gasperini, G. Marozzi and G. Veneziano<br>Affiliation(s): Dipartimento di Fisica, Universita di Bari, Via G. Amendola 173, 70126 Bari, Italy; Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Via G. Amendola 173, 70126 Bari, Italy; GReCO -- Institut d'Astrophysique de Paris, UMR7095, CNRS, Universite Pierre & Marie Curie, 98 bis boulevard Arago, 75014 Paris, France; College de France, 3, rue d'Ulm, 75005 Paris, France; CERN, Theory Unit, Physics Department, CH-1211 Geneva 23, Switzerland Fri, 05 Feb 2010 00:00:00 GMT Cosmic chronometers: constraining the equation of state of dark energy. I: H(z) measurements http://stacks.iop.org/1475-7516/2010/i=02/a=008?rss=2.0 Author(s): Daniel Stern, Raul Jimenez, Licia Verde, Marc Kamionkowski and S. Adam Stanford<br>Affiliation(s): Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 169-506, Pasadena CA-91109, U.S.A.; ICREA & Institute of Sciences of the Cosmos (ICC), University of Barcelona, Barcelona 08028, Spain; California Institute of Technology, Mail Code 350-17, Pasadena, California 91125, U.S.A.; University of California, Davis, CA 95616, U.S.A.; Institute for Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94551, U.S.A. Fri, 05 Feb 2010 00:00:00 GMT On the Sunyaev-Zel'dovich effect from dark matter annihilation or decay in galaxy clusters http://stacks.iop.org/1475-7516/2010/i=02/a=005?rss=2.0 Author(s): Julien Lavalle, Celine Boehm and Julien Barthes<br>Affiliation(s): Dipartimento di Fisica Teorica, Universita di Torino & INFN, via Giuria 1, 10125 Torino, Italia; LAPTH, UMR 5108, 9 chemin de Bellevue - BP 110, 74941 Annecy-Le-Vieux, France Wed, 03 Feb 2010 00:00:00 GMT Cosmological imprints of pre-inflationary particles http://stacks.iop.org/1475-7516/2010/i=02/a=004?rss=2.0 Author(s): Anastasia Fialkov, Nissan Itzhaki and Ely D. Kovetz<br>Affiliation(s): Tel-Aviv University, Ramat-Aviv, 69978, Israel Wed, 03 Feb 2010 00:00:00 GMT On adiabatic perturbations in the ekpyrotic scenario http://stacks.iop.org/1475-7516/2010/i=02/a=006?rss=2.0 Author(s): A. Linde, V. Mukhanov and A. Vikman<br>Affiliation(s): Department of Physics, Stanford University, Stanford, CA 94305, U.S.A.; Arnold-Sommerfeld-Center for Theoretical Physics, Department fur Physik, Ludwig-Maximilians-Universitat Munchen, Theresienstr. 37, D-80333, Munich, Germany; CCPP, New York University, Meyer Hall of Physics, 4 Washington Place, New York, NY 10003, U.S.A. Wed, 03 Feb 2010 00:00:00 GMT Cosmological evolution of scalar fields and gravitino dark matter in gauge mediation at low reheating temperatures http://stacks.iop.org/1475-7516/2010/i=02/a=003?rss=2.0 Author(s): Andrea Ferrantelli and John McDonald<br>Affiliation(s): University of Helsinki and Helsinki Institute of Physics, P.O.Box 64, FIN-00014 University of Helsinki, Finland; Cosmology and Astroparticle Physics Group, University of Lancaster, Lancaster LA1 4YB, U.K. Wed, 03 Feb 2010 00:00:00 GMT Possible cosmogenic neutrino constraints on Planck-scale Lorentz violation http://stacks.iop.org/1475-7516/2010/i=02/a=007?rss=2.0 Author(s): David M. Mattingly, Luca Maccione, Matteo Galaverni, Stefano Liberati and Gunter Sigl<br>Affiliation(s): University of New Hampshire, Library Way 9, Durham, NH 03824, U.S.A.; DESY, Theory Group, Notkestrasse 85, D-22607 Hamburg, Germany; INAF-IASF Bologna, Via Gobetti 101, I-40129 Bologna, Italy; SISSA, Via Beirut, 2-4, I-34151, Trieste, Italy; INFN, Sezione di Trieste, Via Valerio, 2, I-34127, Trieste, Italy; II. Institut fur Theoretische Physik, Universitat Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany Wed, 03 Feb 2010 00:00:00 GMT CMBR weak lensing and HI 21-cm cross-correlation angular power spectrum http://stacks.iop.org/1475-7516/2010/i=02/a=002?rss=2.0 Author(s): Tapomoy Guha Sarkar<br>Affiliation(s): Centre for Theoretical Studies, Indian Institute Of Technology, Kharagpur, 721302, India Mon, 01 Feb 2010 00:00:00 GMT Bispectrum signatures of a modified vacuum in single field inflation with a small speed of sound http://stacks.iop.org/1475-7516/2010/i=02/a=001?rss=2.0 Author(s): P. Daniel Meerburg, Jan Pieter van der Schaar and Mark G. Jackson<br>Affiliation(s): Astronomical Institute ``Anton Pannekoek'', University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands; Korteweg-de Vries Institute for Mathematics, University of Amsterdam, Plantage Muidergracht 24, 1018 TV Amsterdam, The Netherlands; Lorentz Institute for Theoretical Physics, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands Mon, 01 Feb 2010 00:00:00 GMT