Quantum evolution of scalar fields in Robertson-Walker space-time
High Energy Physics - Theory
2011-08-11 v1
Abstract
We study the field theory in a flat Robertson-Walker space-time using the functional Sch\"odinger picture. We introduce a simple Gaussian approximation to analyze the time evolution of pure states and we establish the renormalizability of the approximation. We also show that the energy-momentum tensor in this approximation is finite once we consider the usual mass and coupling constant renormalizations.
Cite
@article{arxiv.hep-th/9510063,
title = {Quantum evolution of scalar fields in Robertson-Walker space-time},
author = {O. J. P. Eboli and H. C. Reis},
journal= {arXiv preprint arXiv:hep-th/9510063},
year = {2011}
}
Comments
Revtex file, 19 pages, no figures. Compressed ps version available at http://phenom.physics.wisc.edu/pub/preprints/1995/madph-95-912.ps.Z or at ftp://phenom.physics.wisc.edu/pub/preprints/1995/madph-95-912.ps.Z