Cosmological evolution of a ghost scalar field
General Relativity and Quantum Cosmology
2010-11-19 v1
Abstract
We consider a scalar field with a negative kinetic term minimally coupled to gravity. We obtain an exact non-static spherically symmetric solution which describes a wormhole in cosmological setting. The wormhole is shown to connect two homogeneous spatially flat universes expanding with acceleration. Depending on the wormhole's mass parameter the acceleration can be constant (the de Sitter case) or infinitely growing.
Cite
@article{arxiv.gr-qc/0404037,
title = {Cosmological evolution of a ghost scalar field},
author = {S. V. Sushkov and S. -W. Kim},
journal= {arXiv preprint arXiv:gr-qc/0404037},
year = {2010}
}
Comments
8 pages