Journal of Cosmology and Astroparticle Physics latest papers

Tracking quintessence and cold dark matter candidates

Wed, 18 Nov 2009 00:00:00 GMT

Author(s): S. Lola, C. Pallis and E. Tzelati
Affiliation(s): Department of Physics, University of Patras, Panepistimioupolis, GR-265 00 Patras, Greece

Large scale evolution of the curvature perturbation in Hořava-Lifshitz cosmology

Wed, 18 Nov 2009 00:00:00 GMT

Author(s): Tsutomu Kobayashi, Yuko Urakawa and Masahide Yamaguchi
Affiliation(s): Department of Physics, Waseda University, Okubo 3-4-1, Shinjuku, Tokyo 169-8555, Japan; Department of Physics and Mathematics, Aoyama Gakuin University, Sagamihara 229-8558, Japan

Thermal inflation and baryogenesis in heavy gravitino scenario

Wed, 18 Nov 2009 00:00:00 GMT

Author(s): Kiwoon Choi, Kwang Sik Jeong, Wan-Il Park and Chang Sub Shin
Affiliation(s): Department of Physics, KAIST, 335 Gwahangno, Yuseong-gu, Daejeon 305-701, Korea; School of Physics, Korea Institute for Advanced Study, 87 Hoegiro, Dongdaemun-gu, Seoul 130-722, Korea

Bouncing universe from a modified dispersion relation

Wed, 18 Nov 2009 00:00:00 GMT

Author(s): Yi Ling, Wei-Jia Li and Jian-Pin Wu
Affiliation(s): Center for Relativistic Astrophysics and High Energy Physics, Department of Physics, Nanchang University, Nanchang, Jiangxi, 330031, China

Effective dynamics of the closed loop quantum cosmology

Mon, 16 Nov 2009 00:00:00 GMT

Author(s): Jakub Mielczarek, Orest Hrycyna and Marek Szydlowski
Affiliation(s): Astronomical Observatory, Jagiellonian University, 30-244 Krakow, Orla 171, Poland; Department of Theoretical Physics, Catholic University of Lublin, Al. Raclawickie 14, 20-950 Lublin, Poland; Marc Kac Complex Systems Research Centre, Jagiellonian University, Reymonta 4, 30-059 Krakow, Poland; Dipartimento di Fisica Nucleare e Teorica, Universita degli studi di Pavia, via A. Bassi 6, I-27100 Pavia, Italy

Static wormholes on the brane inspired by Kaluza-Klein gravity

Fri, 13 Nov 2009 00:00:00 GMT

Author(s): J. Ponce de Leon
Affiliation(s): Laboratory of Theoretical Physics, Department of Physics, University of Puerto Rico, P.O. Box 23343, San Juan, PR 00931, U.S.A.

On non-Gaussianities in multi-field inflation (N fields): bi- and tri-spectra beyond slow-roll

Tue, 10 Nov 2009 00:00:00 GMT

Author(s): Diana Battefeld and Thorsten Battefeld
Affiliation(s): Helsinki Institute of Physics, P.O. Box 64, FIN-00014 Helsinki, Finland; Department of Physics, Princeton University, Princeton, NJ 08544, U.S.A.

Practical tools for third order cosmological perturbations

Tue, 10 Nov 2009 00:00:00 GMT

Author(s): Adam J. Christopherson and Karim A. Malik
Affiliation(s): Astronomy Unit, School of Mathematical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, U.K.

Self-accelerating the normal DGP branch

Tue, 10 Nov 2009 00:00:00 GMT

Author(s): Mariam Bouhmadi-Lopez
Affiliation(s): Centro Multidisciplinar de Astrofisica -- CENTRA, Departamento de Fisica, Instituto Superior Tecnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal

Anisotropy vs chemical composition at ultra-high energies

Thu, 05 Nov 2009 00:00:00 GMT

Author(s): Martin Lemoine and Eli Waxman
Affiliation(s): Institut d'Astrophysique de Paris, CNRS, Universite Pierre & Marie Curie, 98 bis boulevard Arago, F-75014 Paris, France; Physics Faculty, Weizmann Institute, PO Box 26, Rehovot 7600, Israel

Scalar perturbations in p-nflation: the 3-form case

Thu, 05 Nov 2009 00:00:00 GMT

Author(s): Cristiano Germani and Alex Kehagias
Affiliation(s): LUTH, Observatoire de Paris, CNRS UMR 8102, Universite Paris Diderot, 5 Place Jules Janssen, 92195 Meudon Cedex, France; Department of Physics, National Technical University of Athens, Hroon Polytechniou 9, 15780 Zogrtafou, Athens, Greece

Statistics and geometry of cosmic voids

Thu, 05 Nov 2009 00:00:00 GMT

Author(s): Jose Gaite
Affiliation(s): Instituto de Microgravedad IDR, ETS Ingenieros Aeronauticos, Universidad Politecnica de Madrid, E-28040 Madrid, Spain

Tunneling and propagation of vacuum bubbles on dynamical backgrounds

Thu, 05 Nov 2009 00:00:00 GMT

Author(s): Dennis Simon, Julian Adamek, Aleksandar Rakic and Jens C. Niemeyer
Affiliation(s): Institut fur Theoretische Physik und Astrophysik, Universitat Wurzburg, Am Hubland, D-97074 Wurzburg, Germany; Institut fur Astrophysik, Universitat Gottingen, Friedrich-Hund-Platz 1, D-37077 Gottingen, Germany

Phase-space analysis of Hořava-Lifshitz cosmology

Thu, 05 Nov 2009 00:00:00 GMT

Author(s): Genly Leon and Emmanuel N. Saridakis
Affiliation(s): Department of Mathematics, Universidad Central de Las Villas, Santa Clara CP 54830, Cuba; Department of Physics, University of Athens, GR-15771 Athens, Greece

Primordial non-Gaussianities from the trispectra in multiple field inflationary models

Thu, 05 Nov 2009 00:00:00 GMT

Author(s): Xian Gao, Miao Li and Chunshan Lin
Affiliation(s): Key Laboratory of Frontiers in Theoretical Physics, Kavli Institute for Theoretical Physics, Chinese Academy of Sciences, 55# ZhonggGuanCun East Street, Beijing 100190, P.R.China; The Interdisciplinary Center for Theoretical Study, University of Science and Technology of China, 96# JinZhai Road, Hefei, Anhui 230026, P.R.China

The subdominant curvaton

Thu, 05 Nov 2009 00:00:00 GMT

Author(s): Kari Enqvist, Sami Nurmi, Gerasimos Rigopoulos, Olli Taanila and Tomo Takahashi
Affiliation(s): Physics Department, University of Helsinki, FIN-00014 Helsinki, Finland; Helsinki Institute of Physics, University of Helsinki, FIN-00014 Helsinki, Finland; Institute for Theoretical Physics, University of Heidelberg, 69120 Heidelberg, Germany; Department of Physics, Saga University, Saga 840-8502, Japan