Coarse-grained field wave function in stochastic inflation
广义相对论与量子宇宙学
2009-10-31 v4 天体物理学
高能物理 - 唯象学
高能物理 - 理论
摘要
The wave function for the matter field fluctuations in the infrared sector is studied within the framework of inflationary cosmology. These fluctuations are described by a coarse-grained field which takes into account only the modes with wavelength much bigger than the size of the Hubble horizon. The case of a power-law expanding universe is considered and it is found that the relevant phase-space remains coherent under certain circumstances. In this case the classical stochastic treatment for matter field fluctuations is not valid, however, for , the system loses its coherence and a classical stochastic approximation is allowed.
引用
@article{arxiv.gr-qc/0012021,
title = {Coarse-grained field wave function in stochastic inflation},
author = {Mauricio Bellini},
journal= {arXiv preprint arXiv:gr-qc/0012021},
year = {2009}
}
备注
to appear in Nuclear Physics B (version with some changes and some references added)