Does Inflationary Particle Production suggest Omega_m < 1?
High Energy Physics - Phenomenology
2011-08-11 v1 Astrophysics
General Relativity and Quantum Cosmology
Abstract
We study a class of FRW spacetimes with a nonminimally coupled light massive scalar field. Values of the coupling parameter xi<0 enhance long range power in the vacuum expectation value of the energy-momentum tensor and fundamentally alter the nature of inflationary particle production: the energy density of created particles behaves like an effective cosmological constant, leading generically to Omega_m < 1 in clustered matter and providing a possible resolution of the ``Omega problem'' for low density cosmological models.
Keywords
Cite
@article{arxiv.hep-ph/9808204,
title = {Does Inflationary Particle Production suggest Omega_m < 1?},
author = {Varun Sahni and Salman Habib},
journal= {arXiv preprint arXiv:hep-ph/9808204},
year = {2011}
}
Comments
4 pages, 2 figures (embedded using epsf), uses RevTeX plus macro (included). Phys. Rev. Lett. (in press)