Work

Emergent universe scenario, bouncing universes, and cyclic universes in degenerate massive gravity

Year: 2019

Type: article

Abstract: We consider alternative inflationary cosmologies in massive gravity with degenerate reference metrics and study the feasibilities of the emergent universe scenario, bouncing universes, and cyclic universes. We focus on the construction of the Einstein static universe, classes of exact solutions of bouncing universes, and cyclic universes in degenerate massive gravity. We further study the stabilities of the Einstein static universe against both homogeneous and inhomogeneous scalar perturbations and give the parameters region for a stable Einstein static universe.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.99.104057

Authors: Shou-Long Li, H. Lü, Hao Wei, Puxun Wu, Hongwei Yu

Institutions: Beijing Institute of Technology, Tianjin University, Hunan Normal University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: National Natural Science Foundation of China