Phantom Domain Walls
General Relativity and Quantum Cosmology
2017-08-16 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We consider a model with two real scalar fields which admits phantom domain wall solutions. We investigate the structure and evolution of these phantom domain walls in an expanding homogeneous and isotropic universe. In particular, we show that the increase of the tension of the domain walls with cosmic time, associated to the evolution of the phantom scalar field, is responsible for an additional damping term in their equations of motion. We describe the macroscopic dynamics of phantom domain walls, showing that extended phantom defects whose tension varies on a cosmological timescale cannot be the dark energy.
Cite
@article{arxiv.1706.09182,
title = {Phantom Domain Walls},
author = {P. P. Avelino and V. M. C. Ferreira and J. Menezes and L. Sousa},
journal= {arXiv preprint arXiv:1706.09182},
year = {2017}
}
Comments
6 pages