Mass Renormalization for Time Dependent Correlation Functions in Shibata-Hashitsume's Projection Operator Method
High Energy Physics - Theory
2007-05-23 v1 Nuclear Theory
Quantum Physics
Abstract
We study the time development of correlation functions at both zero and finite temperature with Shibata-Hashitsume's projection operator method and carry out the renormalization of ultraviolet divergence that appears in a time-dependent frequency shift, using a mass counter term. A harmless divergence of log t-type remains at an initial time t=0 after the lowest order renormalization.
Cite
@article{arxiv.hep-th/9803070,
title = {Mass Renormalization for Time Dependent Correlation Functions in Shibata-Hashitsume's Projection Operator Method},
author = {T. Koide and M. Maruyama and F. Takagi},
journal= {arXiv preprint arXiv:hep-th/9803070},
year = {2007}
}
Comments
9 pages, 4 figures, RevTeX