2PI simulations in expanding backgrounds: Doing it anyway!
High Energy Physics - Phenomenology
2009-11-13 v1 General Relativity and Quantum Cosmology
Abstract
I set out the 2PI formalism for quantum fields in a Friedmann-Robertson-Walker Universe. I show how one can solve self-consistently for the quantum field evolution and the evolution of the cosmological scale factor, using a renormalised semi-classical Friedmann equation. In a 2PI coupling expansion truncated at O(lambda^2), I perform sample calculations demonstrating kinetic and chemical equilibration in this context.
Cite
@article{arxiv.0810.2887,
title = {2PI simulations in expanding backgrounds: Doing it anyway!},
author = {Anders Tranberg},
journal= {arXiv preprint arXiv:0810.2887},
year = {2009}
}
Comments
4 pages, 5 figures, to appear in the Proceedings of SEWM08, Amsterdam, the Netherlands, August 26-29, 2008