Generalized crossover in multiparameter Hamiltonians - art. no. 047104

Authors
Parruccini, P Rossi, P
Citation
P. Parruccini et P. Rossi, Generalized crossover in multiparameter Hamiltonians - art. no. 047104, PHYS REV E, 6404(4), 2001, pp. 7104
Citations number
14
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW E
ISSN journal
1063651X → ACNP
Volume
6404
Issue
4
Year of publication
2001
Part
2
Database
ISI
SICI code
1063-651X(200110)6404:4<7104:GCIMH->2.0.ZU;2-N
Abstract
Many systems near criticality can be described by Hamiltonians involving se veral relevant couplings and possessing many nontrivial fixed points. A sim ple and physically appealing characterization of the crossover lines and su rfaces connecting different nontrivial fixed points is presented. Generaliz ed crossover is related to the vanishing of the renormalization group funct ion Z(t)(-1). An explicit example is discussed in detail based on the tetra gonal. Landau-Ginzburg-Wilson Hamiltonian.