Instabilities in tensorial nonlocal gravity
General Relativity and Quantum Cosmology
2017-03-01 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
We discuss the cosmological implications of nonlocal modifications of general relativity containing tensorial structures. Assuming the presence of standard radiation- and matter-dominated eras, we show that, except in very particular cases, the nonlocal terms contribute a rapidly growing energy density. These models therefore generically do not have a stable cosmological evolution.
Cite
@article{arxiv.1610.01799,
title = {Instabilities in tensorial nonlocal gravity},
author = {Henrik Nersisyan and Yashar Akrami and Luca Amendola and Tomi S. Koivisto and Javier Rubio and Adam R. Solomon},
journal= {arXiv preprint arXiv:1610.01799},
year = {2017}
}
Comments
10 pages, 2 figures. v2: version published in PRD