Curvature and isocurvature perturbations in two-field inflation
dc.contributor.author | Lalak, Z. | en_US |
dc.contributor.author | Langlois, D. | en_US |
dc.contributor.author | Pokorski, S. | en_US |
dc.contributor.author | Turzyński, K. | en_US |
dc.date.accessioned | 2008-04-02T14:50:03Z | |
dc.date.available | 2008-04-02T14:50:03Z | |
dc.date.issued | 2007-07-01 | en_US |
dc.identifier.citation | Lalak, Z; Langlois, D; Pokorski, S; Turzyński, K (2007). "Curvature and isocurvature perturbations in two-field inflation." Journal of Cosmology and Astroparticle Physics. 07(014). <http://hdl.handle.net/2027.42/58173> | en_US |
dc.identifier.issn | 1475-7516 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/58173 | |
dc.description.abstract | We study cosmological perturbations in two-field inflation, allowing for non-standard kinetic terms. We calculate analytically the spectra of curvature and isocurvature modes at Hubble crossing, up to first order in the slow-roll parameters. We also compute numerically the evolution of the curvature and isocurvature modes from well within the Hubble radius until the end of inflation. We show explicitly for a few examples, including the recently proposed model of ‘roulette’ inflation, how isocurvature perturbations affect significantly the curvature perturbation between Hubble crossing and the end of inflation. | en_US |
dc.format.extent | 3118 bytes | |
dc.format.extent | 871536 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/pdf | |
dc.publisher | IOP Publishing Ltd | en_US |
dc.title | Curvature and isocurvature perturbations in two-field inflation | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Institute of Theoretical Physics, Warsaw University, ulica Hoa 69, 00-681 Warsaw, Poland ; Physics Department, University of Michigan, 450 Church Street, Ann Arbor, MI 48109, USA | en_US |
dc.contributor.affiliationother | Institute of Theoretical Physics, Warsaw University, ulica Hoa 69, 00-681 Warsaw, Poland | en_US |
dc.contributor.affiliationother | APC (Astroparticules et Cosmologie, CNRS-UMR 7164), Université Paris 7, 10, rue Alice Domon et Léonie Duquet, 75205 Paris Cedex 13, France ; GReCO, Institut d’Astrophysique de Paris, CNRS, 98bis Boulevard Arago, 75014 Paris, France | en_US |
dc.contributor.affiliationother | Institute of Theoretical Physics, Warsaw University, ulica Hoa 69, 00-681 Warsaw, Poland | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/58173/2/jcap7_07_014.pdf | |
dc.identifier.doi | http://dx.doi.org/10.1088/1475-7516/2007/07/014 | en_US |
dc.identifier.source | Journal of Cosmology and Astroparticle Physics. | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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