A study on causality in $f(R,\phi,X)$ theory
General Relativity and Quantum Cosmology
2021-02-17 v1
Abstract
The -essence modified gravity model, i.e., theory is studied. The question of violation of causality, in the framework of G\"{o}del-type universes, is investigated in this gravitational model. Causal and non-causal solutions are allowed. A critical radius for non-causal solution is calculated. It is shown that the violation of causality depends on the content of matter.
Keywords
Cite
@article{arxiv.2011.08005,
title = {A study on causality in $f(R,\phi,X)$ theory},
author = {J. S. Gonçalves and A. F. Santos},
journal= {arXiv preprint arXiv:2011.08005},
year = {2021}
}
Comments
14 pages, accepted for publication in IJMPA