Topological Defects in Contracting Universes
Astrophysics
2015-06-24 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We study the behaviour and consequences of cosmic string networks in contracting universes. They approximately behave during the collapse phase as a radiation fluids. Scaling solutions describing this are derived and tested against high-resolution numerical simulations. A string network in a contracting universe, together with the gravitational radiation it generates, can affect the dynamics of the universe both locally and globally, and be an important source of radiation, entropy and inhomogeneity. We discuss possible implications for bouncing and cyclic models.
Cite
@article{arxiv.astro-ph/0211066,
title = {Topological Defects in Contracting Universes},
author = {P. P. Avelino and C. J. A. P. Martins and C. Santos and E. P. S. Shellard},
journal= {arXiv preprint arXiv:astro-ph/0211066},
year = {2015}
}
Comments
Shorter version of astro-ph/0206287. To appear in Phys. Rev. Lett