Dynamics of nonminimally coupled scalar field models with generic potentials in FLRW background
Abstract
We study the phase space analysis of a nonminimally coupled scalar field model with different potentials such as KKLT, Higgs, inverse and inverse square. Our investigation brings new asymptotic regimes, and obtains stable de-Sitter solution. In case of KKLT, we do not find stable de-Sitter solution whereas Higgs model satisfies the de-Sitter condition but does not provide a stable de-Sitter solution in usual sense as one of the eigenvalue is zero. We obtain time derivative of Hubble constant , equation of state , scalar field constant and the positive effective gravitational constant (), which are missed in our earlier work. Therefore, in case of coupling with and the models of inverse and inverse square potentials a true stable de-Sitter solution is trivially satisfied.
Keywords
Cite
@article{arxiv.2011.06930,
title = {Dynamics of nonminimally coupled scalar field models with generic potentials in FLRW background},
author = {M. Shahalam and Shynaray Myrzakul},
journal= {arXiv preprint arXiv:2011.06930},
year = {2021}
}
Comments
13 pages, 5 figures. arXiv admin note: text overlap with arXiv:1905.06856