Anisotropic Inflation With Derivative Couplings
dc.contributor.author | Holland, Jonathan | |
dc.contributor.author | Kanno, Sugumi | |
dc.contributor.author | Zavala, Ivonne | |
dc.date.accessioned | 2018-06-25T09:12:23Z | |
dc.date.available | 2018-06-25T09:12:23Z | |
dc.date.issued | 2018-05-29 | |
dc.identifier.citation | Physical Review D 97 : (2018) // Article ID 103534 | es_ES |
dc.identifier.issn | 2470-0010 | |
dc.identifier.issn | 2470-0029 | |
dc.identifier.uri | http://hdl.handle.net/10810/27704 | |
dc.description.abstract | We study anisotropic power-law inflationary solutions when the inflaton and its derivative couple to a vector field. This type of coupling is motivated by D-brane inflationary models, in which the inflaton, and a vector field living on the D-brane, couple disformally (derivatively). We start by studying a phenomenological model where we show the existence of anisotropic solutions and demonstrate their stability via a dynamical system analysis. Compared to the case without a derivative coupling, the anisotropy is reduced and thus can be made consistent with current limits, while the value of the slow-roll parameter remains almost unchanged. We also discuss solutions for more general cases, including D-brane-like couplings. | es_ES |
dc.description.sponsorship | We thank Gianmassimo Tasinato for discussions. S. K. was supported by IKERBASQUE, the Basque Foundation for Science, and the Basque Government (IT-979-16), and Spanish Ministry MINECO (FPA2015-64041-C2-1P). I. Z. was partially supported by the STFC Grants No. ST/N001419/1 and No. ST/L000369/1. S. K. would like to thank the Physics Department at Swansea University for warm hospitality and the College Research Fund for financial support. J. H. was supported by a Swansea College of Science Doctoral Training Centre (DTC) Research Scholarship funded partly by Swansea University and partly by the STFC. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Physical Society | es_ES |
dc.relation | Info:eu-repo/grantAgreement/MINECO/FPA2015-64041-C2-1P | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.title | Anisotropic Inflation With Derivative Couplings | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. Attribution 4.0 International (CC BY 4.0) Share — copy and redistribute the material in any medium or format Adapt — remix, transform, and build upon the material for any purpose, even commercially. | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.97.103534 | es_ES |
dc.identifier.doi | 10.1103/PhysRevD.97.103534 | |
dc.departamentoes | Física teórica e historia de la ciencia | es_ES |
dc.departamentoeu | Fisika teorikoa eta zientziaren historia | es_ES |
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Except where otherwise noted, this item's license is described as Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Attribution 4.0 International (CC BY 4.0)
Share — copy and redistribute the material in any medium or format
Adapt — remix, transform, and build upon the material
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