Equations of State for Nonlinear Sigma-Models II: Relations between Resummation Schemes, and Crossover Phenomena
Condensed Matter
2009-10-22 v1
Abstract
It is shown how a recent method to systematically extrapolate and resum the loop expansion for nonlinear sigma-models is related to solutions of the renormalization group equation. This relation is used to generalize the explicit equations of state obtained previously to models which display crossover phenomena. As an example we discuss Wegner's localization model and consider the crossover from symplectic to unitary symmetry.
Keywords
Cite
@article{arxiv.cond-mat/9412105,
title = {Equations of State for Nonlinear Sigma-Models II: Relations between Resummation Schemes, and Crossover Phenomena},
author = {S. Q. Yang and D. Belitz},
journal= {arXiv preprint arXiv:cond-mat/9412105},
year = {2009}
}
Comments
14pp., REVTeX, 1 figure