Flow Equations and Normal Ordering
Statistical Mechanics
2009-11-11 v1
Abstract
In this paper we consider flow-equations where we allow a normal ordering which is adjusted to the one-particle energy of the Hamiltonian. We show that this flow converges nearly always to the stable phase. Starting out from the symmetric Hamiltonian and symmetry-broken normal ordering nearly always yields symmetry breaking below the critical temperature.
Cite
@article{arxiv.cond-mat/0509801,
title = {Flow Equations and Normal Ordering},
author = {Elmar Koerding and Franz Wegner},
journal= {arXiv preprint arXiv:cond-mat/0509801},
year = {2009}
}
Comments
7 pages