Cosmological inflation driven by a scalar torsion function

Autor:	T. M. Guimarães, R. de C. Lima, S. H. Pereira
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Zdroj:	European Physical Journal C: Particles and Fields, Vol 81, Iss 4, Pp 1-8 (2021)
Druh dokumentu:	article
ISSN:	1434-6044 1434-6052
DOI:	10.1140/epjc/s10052-021-09076-x
Popis:	Abstract A viable model for inflation driven by a torsion function in a Friedmann background is presented. The scalar spectral index in the interval $$0.92\lesssim n_{s}\lesssim 0.97$$ 0.92 ≲ n s ≲ 0.97 is obtained in order to satisfy the initial conditions for inflation. The post inflationary phase is also studied, and the analytical solutions obtained for scale factor and energy density generalizes that ones for a matter dominated universe, indicating just a small deviation from the standard model evolution. The same kind of torsion function used also describes satisfactorily the recent acceleration of the universe, which could indicate a possible unification of different phases, apart form specific constants
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/0a004d0b9f344a8e82a0a30d473426ed Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.