Stability of multi-field cosmological solutions

Simple item page
dc.creatorCalcagni, Gianluca
dc.creatorLiddle, Andrew R.
dc.date2007-11-21
dc.date2007-11-29
dc.date.accessioned2026-07-07T12:13:54Z
dc.date.available2026-07-07T12:13:54Z
dc.descriptionWe explore the stability properties of multi-field solutions of assisted inflation type, where several fields collectively evolve to the same configuration. In the case of noninteracting fields, we show that the condition for such solutions to be stable is less restrictive than that required for tracking in quintessence models. Our results, which do not rely on the slow-roll approximation, further indicate that to linear order in homogeneous perturbations the fields are in fact unaware of each other's existence. We end by generalizing our results to some cases of interacting fields and to other background solutions and dynamics, including the high-energy braneworld.
dc.description6 pages; v2: typos corrected, version accepted by PRD
dc.identifierhttps://arxiv.org/abs/0711.3360
dc.identifierhttp://arxiv.org/abs/0711.3360
dc.identifierPhys.Rev.D77:023522,2008
dc.identifierdoi:10.1103/PhysRevD.77.023522
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211012
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleStability of multi-field cosmological solutions
dc.typetext

Files

Collections

arXiv