Inhomogeneous cosmologies with Q matter and varying Λ
Starting from the inhomogeneous shear-free Nariai metric we show, by solving the Einstein-Klein-Gordon field equations, how a self-interacting scalar field plus a material fluid, a variable cosmological term, and a heat flux can drive the universe to its currently observed state of homogeneous accel...
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1999
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v60_n10_p1_Chimento http://hdl.handle.net/20.500.12110/paper_05562821_v60_n10_p1_Chimento |
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paper:paper_05562821_v60_n10_p1_Chimento2023-06-08T15:42:22Z Inhomogeneous cosmologies with Q matter and varying Λ Starting from the inhomogeneous shear-free Nariai metric we show, by solving the Einstein-Klein-Gordon field equations, how a self-interacting scalar field plus a material fluid, a variable cosmological term, and a heat flux can drive the universe to its currently observed state of homogeneous accelerated expansion. A quintessence scenario where power-law inflation takes place for a string-motivated potential in the late-time dominated field regime is proposed. ©1999 The American Physical Society. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v60_n10_p1_Chimento http://hdl.handle.net/20.500.12110/paper_05562821_v60_n10_p1_Chimento |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
description |
Starting from the inhomogeneous shear-free Nariai metric we show, by solving the Einstein-Klein-Gordon field equations, how a self-interacting scalar field plus a material fluid, a variable cosmological term, and a heat flux can drive the universe to its currently observed state of homogeneous accelerated expansion. A quintessence scenario where power-law inflation takes place for a string-motivated potential in the late-time dominated field regime is proposed. ©1999 The American Physical Society. |
title |
Inhomogeneous cosmologies with Q matter and varying Λ |
spellingShingle |
Inhomogeneous cosmologies with Q matter and varying Λ |
title_short |
Inhomogeneous cosmologies with Q matter and varying Λ |
title_full |
Inhomogeneous cosmologies with Q matter and varying Λ |
title_fullStr |
Inhomogeneous cosmologies with Q matter and varying Λ |
title_full_unstemmed |
Inhomogeneous cosmologies with Q matter and varying Λ |
title_sort |
inhomogeneous cosmologies with q matter and varying λ |
publishDate |
1999 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v60_n10_p1_Chimento http://hdl.handle.net/20.500.12110/paper_05562821_v60_n10_p1_Chimento |
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1768544916056571904 |