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Reliability of the Langevin perturbative solution in stochastic inflation

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Martin, J. Musso, Marcello [UCL]

A method to estimate the reliability of a perturbative expansion of the stochastic inflationary Langevin equation is presented and discussed. The method is applied to various inflationary scenarios, as large field, small field, and running mass models. It is demonstrated that the perturbative approach is more reliable than could be naïvely suspected and, in general, only breaks down at the very end of inflation.

Document type Article de périodique (Journal article) – Article de recherche
Publication date 2006
Language Anglais
Journal information "Physical Review. D, Particles, Fields, Gravitation and Cosmology" - Vol. 73, p. 043517 (2006)
Peer reviewed yes
Publisher American Physical Society ((United States) [S.l.])
issn 1550-7998
Publication status Publié
Affiliation UCL - SC/MATH - Département de mathématique
Links
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Bibliographic reference Martin, J. ; Musso, Marcello. Reliability of the Langevin perturbative solution in stochastic inflation. In: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 73, p. 043517 (2006)
Permanent URL http://hdl.handle.net/2078/121703