The Mimetic Born-Infeld Gravity: The Primordial Cosmos and Spherically Symmetric Solutions
Journal
Galaxies
Journal Volume
5
Journal Issue
4
Pages
87
Date Issued
2017
Author(s)
Abstract
The Eddington-inspired-Born-Infeld (EiBI) model is reformulated within the mimetic approach. In the presence of a mimetic field, the model contains non-trivial vacuum solutions. We study a realistic primordial vacuum universe and we prove the existence of regular solutions. Besides, the linear instabilities in the EiBI model are found to be avoidable for some bouncing solutions. For a vacuum, static and spherically symmetric geometry, a new branch of solutions in which the black hole singularity that is replaced with a lightlike singularity is found.
SDGs
Type
journal article