Correlations and symmetry breaking in gapped matrix models

Authors
Citation
E. Brezin et N. Deo, Correlations and symmetry breaking in gapped matrix models, PHYS REV E, 59(4), 1999, pp. 3901-3910
Citations number
11
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW E
ISSN journal
1063651X → ACNP
Volume
59
Issue
4
Year of publication
1999
Pages
3901 - 3910
Database
ISI
SICI code
1063-651X(199904)59:4<3901:CASBIG>2.0.ZU;2-4
Abstract
Some puzzles which arise in matrix models with multiple cuts are presented. They are present in the smoothed eigenvalue correlators of these models. F irst a method is described to calculate smoothed eigenvalue correlators in random matrix models with eigenvalues distributed in a single cut. Previous known results are reproduced. The method is extended to symmetric two-cut random matrix models. The correlators are written in a form suitable for ap plication to mesoscopic systems. Connections are made with the smooth corre lators derived using the orthogonal polynomial method. A few interesting ob servations are made regarding even and odd density-density;correlators and crossover correlators in Z(2) symmetric random matrix models. A symmetry br eaking parameter C is identified in the smooth correlators for all beta=1, 2, and 4.