Zobrazeno 1 - 10 of 33 pro vyhledávání: '"F. G. Alvarenga"'
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Akademický článek
Late-time cosmological approach in mimetic f(R, T) gravity
Autor: E. H. Baffou, M. J. S. Houndjo, M. Hamani-Daouda, F. G. Alvarenga
Publikováno v: European Physical Journal C: Particles and Fields, Vol 77, Iss 10, Pp 1-9 (2017)
Abstract In this paper, we investigate the late-time cosmic acceleration in mimetic f(R, T) gravity with the Lagrange multiplier and potential in a Universe containing, besides radiation and dark energy, a self-interacting (collisional) matter. We ob
Externí odkaz: https://doaj.org/article/bb95aa8abd39457d977dcc54d78b9527
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5
Quantum Cosmology with Many Fluids and the Choice of Cosmological Time
Autor: Cláudia Santos, S. V. B. Gonçalves, F. G. Alvarenga, G. Oliveira-Neto, G. A. Monerat, E. V. Corrêa Silva, R. Fracalossi
Publikováno v: Brazilian Journal of Physics. 50:89-104
In this work we propose the quantization of a cosmological model describing the primordial universe filled with five barotropic fluids, namely: radiation, dust, vacuum, cosmic strings and domain walls. We intend to identify which fluid is best suited
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aac7d3190ee3f7b60ab9a6c1cc2f019d
https://doi.org/10.1007/s13538-019-00720-2
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8
Late-time cosmological approach in mimetic f(R, T) gravity
Autor: F. G. Alvarenga, M. Hamani-Daouda, M. J. S. Houndjo, E. H. Baffou
Publikováno v: European Physical Journal C: Particles and Fields, Vol 77, Iss 10, Pp 1-9 (2017)
European Physical Journal
In this paper, we investigate the late-time cosmic acceleration in mimetic $f(R,T)$ gravity with Lagrange multiplier and potential in a Universe containing, besides radiation and dark energy, a self-interacting (collisional) matter. We obtain through
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac00984c5467fd10810d5551a5b03d83
http://link.springer.com/article/10.1140/epjc/s10052-017-5291-x
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9
Classical and quantum cosmology with two perfect fluids: stiff matter and radiation
Autor: S. V. B. Gonçalves, R. C. Freitas, F. G. Alvarenga, R. Fracalossi
Publikováno v: General Relativity and Gravitation. 49
In this work the homogeneous and isotropic Universe of Friedmann-Robertson-Walker is studied in the presence of two fluids: stiff matter and radiation described by the Schutz's formalism. We obtain to the classic case the behaviour of the scale facto
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcd161f3c31202cb6b0a9ee89b3fde59
https://doi.org/10.1007/s10714-017-2301-0
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