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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todo:paper_05562821_v60_n10_p1_Chimento2023-10-03T15:35:37Z Inhomogeneous cosmologies with Q matter and varying Λ Chimento, L.P. Jakubi, A.S. Pavón, D. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05562821_v60_n10_p1_Chimento |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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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. |
| format |
JOUR |
| author |
Chimento, L.P. Jakubi, A.S. Pavón, D. |
| spellingShingle |
Chimento, L.P. Jakubi, A.S. Pavón, D. Inhomogeneous cosmologies with Q matter and varying Λ |
| author_facet |
Chimento, L.P. Jakubi, A.S. Pavón, D. |
| author_sort |
Chimento, L.P. |
| title |
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 |
| url |
http://hdl.handle.net/20.500.12110/paper_05562821_v60_n10_p1_Chimento |
| work_keys_str_mv |
AT chimentolp inhomogeneouscosmologieswithqmatterandvaryingl AT jakubias inhomogeneouscosmologieswithqmatterandvaryingl AT pavond inhomogeneouscosmologieswithqmatterandvaryingl |
| _version_ |
1807315595692081152 |