Scalar field emulator via anisotropically deformed vacuum energy: Application to dark energy
General Relativity and Quantum Cosmology
2020-05-01 v1 High Energy Physics - Theory
Abstract
We introduce a generalization of the usual vacuum energy, called `deformed vacuum energy', which yields anisotropic pressure whilst preserving zero inertial mass density. It couples to the shear scalar in a unique way, such that they together emulate the canonical scalar field with an arbitrary potential. This opens up a new avenue by reconsidering cosmologies based on canonical scalar fields, along with a bonus that the kinetic term of the scalar field is replaced by an observable, the shear scalar. We further elaborate the aspects of this approach in the context of dark energy.
Keywords
Cite
@article{arxiv.2004.14863,
title = {Scalar field emulator via anisotropically deformed vacuum energy: Application to dark energy},
author = {Ozgur Akarsu and Nihan Katirci and Anjan A. Sen and J. Alberto Vazquez},
journal= {arXiv preprint arXiv:2004.14863},
year = {2020}
}
Comments
7 pages, 1 figure, 2 tables