Maqola

Perturbations in non-flat cosmology for f(T) gravity

Sebastián BahamondeDepartment of Physics, Tokyo Institute of Technology, 1-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, JapanKonstantinos F. DialektopoulosDepartment of Physics, Nazarbayev University, 53 Kabanbay Batyr avenue, 010000, Astana, KazakhstanManuel HohmannLaboratory of Theoretical Physics, Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411, Tartu, EstoniaJackson Levi SaidDepartment of Physics, University of Malta, Msida, MaltaChristian PfeiferZARM, University of Bremen, 28359, Bremen, GermanyEmmanuel N. SaridakisCAS Key Laboratory for Research in Galaxies and Cosmology, University of Science and Technology of China, Hefei, 230026, Anhui, China

2023en

ABI

Annotatsiya

Abstract The study of cosmological perturbation theory in f ( T ) gravity is a topic of great interest in teleparallel gravity since this is one of the simplest generalizations of the theory that modifies the teleparallel equivalent of general relativity. In this work, we explore the possibility of a non-flat FLRW background solution and perform perturbations for positively as well as negatively curved spatial geometries, together with a comparison to the flat case. We determine the generalized behaviour of the perturbative modes for this non-flat FLRW setting for arbitrary f ( T ) models, when the most general homogeneous and isotropic background tetrads are used. We also identify propagating modes in this setup, and relate this with the case of a flat cosmology.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.1140/epjc/s10052-023-11322-3

Iqtiboslar va manbalar

2 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar