Cosmological wave maps
General Relativity and Quantum Cosmology
2019-06-17 v1
Abstract
We consider theories of gravity that include many coupled scalar fields with arbitrary couplings, in the geometric framework of wave maps. We examine the possibility of obtaining acceptable cosmological solutions without the inclusion of a potential term to the scalar fields. To illustrate the theory, we study two simple models and compare their solutions to those in General Relativity. We also address the issue of the conditions that must be satisfied by the wave maps for an accelerated phase of the Universe.
Cite
@article{arxiv.1905.11049,
title = {Cosmological wave maps},
author = {Spiros Cotsakis and John Miritzis and Koralia Tzanni},
journal= {arXiv preprint arXiv:1905.11049},
year = {2019}
}
Comments
13 pages, 2 figures. To appear in IJMPA