Cosmological solutions with nonlinear bulk viscosity

Luis P. Chimento; Alejandro S. Jakubi; Vicenç Méndez; Roy Maartens

doi:10.1088/0264-9381/14/12/019

Cosmological solutions with nonlinear bulk viscosity

Luis P. Chimento^*, Alejandro S. Jakubi, Vicenç Méndez, Roy Maartens

^*Autor corresponent d’aquest treball

Departament de Física

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Resum

A recently proposed nonlinear transport equation is used to model bulk viscous cosmologies that may be far from equilibrium, as happens during viscous fluid inflation or during reheating. The asymptotic stability of the de Sitter and Friedmann solutions is investigated. The former is stable for bulk viscosity index q < 1 and the latter for q > 1. New solutions are obtained in the weakly nonlinear regime for q = 1. These solutions are singular and some of them represent a late-time inflationary era.

Idioma original	Anglès
Pàgines (de-a)	3363-3375
Nombre de pàgines	13
Revista	Classical and Quantum Gravity
Volum	14
Número	12
DOIs	https://doi.org/10.1088/0264-9381/14/12/019
Estat de la publicació	Publicada - de des. 1997

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10.1088/0264-9381/14/12/019

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title = "Cosmological solutions with nonlinear bulk viscosity",

abstract = "A recently proposed nonlinear transport equation is used to model bulk viscous cosmologies that may be far from equilibrium, as happens during viscous fluid inflation or during reheating. The asymptotic stability of the de Sitter and Friedmann solutions is investigated. The former is stable for bulk viscosity index q < 1 and the latter for q > 1. New solutions are obtained in the weakly nonlinear regime for q = 1. These solutions are singular and some of them represent a late-time inflationary era.",

author = "Chimento, {Luis P.} and Jakubi, {Alejandro S.} and Vicen{\c c} M{\'e}ndez and Roy Maartens",

year = "1997",

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T1 - Cosmological solutions with nonlinear bulk viscosity

AU - Chimento, Luis P.

AU - Jakubi, Alejandro S.

AU - Méndez, Vicenç

AU - Maartens, Roy

PY - 1997/12

Y1 - 1997/12

N2 - A recently proposed nonlinear transport equation is used to model bulk viscous cosmologies that may be far from equilibrium, as happens during viscous fluid inflation or during reheating. The asymptotic stability of the de Sitter and Friedmann solutions is investigated. The former is stable for bulk viscosity index q < 1 and the latter for q > 1. New solutions are obtained in the weakly nonlinear regime for q = 1. These solutions are singular and some of them represent a late-time inflationary era.

AB - A recently proposed nonlinear transport equation is used to model bulk viscous cosmologies that may be far from equilibrium, as happens during viscous fluid inflation or during reheating. The asymptotic stability of the de Sitter and Friedmann solutions is investigated. The former is stable for bulk viscosity index q < 1 and the latter for q > 1. New solutions are obtained in the weakly nonlinear regime for q = 1. These solutions are singular and some of them represent a late-time inflationary era.

UR - http://www.scopus.com/inward/record.url?scp=0031525157&partnerID=8YFLogxK

U2 - 10.1088/0264-9381/14/12/019

DO - 10.1088/0264-9381/14/12/019

M3 - Article

AN - SCOPUS:0031525157

SN - 0264-9381

VL - 14

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EP - 3375

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

IS - 12

ER -

Cosmological solutions with nonlinear bulk viscosity

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