On big rip singularities

Here we discuss big rip singularities occurring in typical phantom models by violation of the weak energy condition. After that, we compare them with future late-time singularities arising in models where the scale factor ends in a constant value and there is no violation of the strong energy condit...

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Detalles Bibliográficos
Autores principales: Chimento, L.P., Lazkoz, R.
Formato: JOUR
Materias:
article
density
energy
kinetics
mathematical analysis
mathematical model
phantom
pressure
statistical analysis
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02177323_v19_n33_p2479_Chimento
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02177323_v19_n33_p2479_Chimento
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spelling todo:paper_02177323_v19_n33_p2479_Chimento2023-10-03T15:10:21Z On big rip singularities Chimento, L.P. Lazkoz, R. article density energy kinetics mathematical analysis mathematical model phantom pressure statistical analysis Here we discuss big rip singularities occurring in typical phantom models by violation of the weak energy condition. After that, we compare them with future late-time singularities arising in models where the scale factor ends in a constant value and there is no violation of the strong energy condition. In phantom models the equation of state is well defined along the whole evolution, even at the big rip. However, both the pressure and the energy density of the phantom field diverge. In contrast, in the second kind of model the equation of state is not defined at the big rip because the pressure bursts at a finite value of the energy density. Fil:Chimento, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02177323_v19_n33_p2479_Chimento
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic article
density
energy
kinetics
mathematical analysis
mathematical model
phantom
pressure
statistical analysis
spellingShingle article
density
energy
kinetics
mathematical analysis
mathematical model
phantom
pressure
statistical analysis
Chimento, L.P.
Lazkoz, R.
On big rip singularities
topic_facet article
density
energy
kinetics
mathematical analysis
mathematical model
phantom
pressure
statistical analysis
description Here we discuss big rip singularities occurring in typical phantom models by violation of the weak energy condition. After that, we compare them with future late-time singularities arising in models where the scale factor ends in a constant value and there is no violation of the strong energy condition. In phantom models the equation of state is well defined along the whole evolution, even at the big rip. However, both the pressure and the energy density of the phantom field diverge. In contrast, in the second kind of model the equation of state is not defined at the big rip because the pressure bursts at a finite value of the energy density.
format JOUR
author Chimento, L.P.
Lazkoz, R.
author_facet Chimento, L.P.
Lazkoz, R.
author_sort Chimento, L.P.
title On big rip singularities
title_short On big rip singularities
title_full On big rip singularities
title_fullStr On big rip singularities
title_full_unstemmed On big rip singularities
title_sort on big rip singularities
url http://hdl.handle.net/20.500.12110/paper_02177323_v19_n33_p2479_Chimento
work_keys_str_mv AT chimentolp onbigripsingularities
AT lazkozr onbigripsingularities
_version_ 1807320971485380608

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