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Random Matrix Theory and Dirac Spectrum at Nonzero Temperature and Density
Bernd A. Berg, Harald Markum, Rainer Pullirsch +1
We investigate the eigenvalue spectrum of the staggered Dirac matrix in SU(3) gauge theory and in full QCD as well as in quenched U(1) theory on various lattice sizes. As a measure…
Spin glass overlap barriers in three and four dimensions
Bernd A. Berg, Alain Billoire, Wolfhard Janke
For the Edwards-Anderson Ising spin-glass model in three and four dimensions (3d and 4d) we have performed high statistics Monte Carlo calculations of those free-energy barriers $F…
Introduction to Multicanonical Monte Carlo Simulations
Bernd A. Berg
Monte Carlo simulation with {\it a-priori} unknown weights have attracted recent attention and progress has been made in understanding (i) the technical feasibility of such simulat…
U(1) staggered Dirac operator and random matrix
Bernd A. Berg, Harald Markum, Rainer Pullirsch +1
We investigate the spectrum of the staggered Dirac operator in 4d quenched U(1) lattice gauge theory and its relationship to random matrix theory. In the confined as well as in the…