Generalized Crossover in multiparameter Hamiltonians
统计力学
2009-11-07 v2 高能物理 - 理论
摘要
Many systems near criticality can be described by Hamiltonians involving several relevant couplings and possessing many nontrivial fixed points. A simple and physically appealing characterization of the crossover lines and surfaces connecting different nontrivial fixed points is presented. Generalized crossover is related to the vanishing of the RG function . An explicit example is discussed in detail based on the tetragonal GLW Hamiltonian.
引用
@article{arxiv.cond-mat/0103598,
title = {Generalized Crossover in multiparameter Hamiltonians},
author = {Pietro Parruccini and Paolo Rossi},
journal= {arXiv preprint arXiv:cond-mat/0103598},
year = {2009}
}
备注
4 pages, 1figure