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Evolution of the Structure Factors in Pure SU(N) Lattice Gauge Theory and Effective Spin Models
A. Bazavov, B. A. Berg, A. Velytsky
We consider model A dynamics for a quench from the disordered into the ordered phase of SU(3) lattice gauge theory and the analogue 3d 3-state Potts model. For the gauge model this…
A Regularization of Quantum Gravity
Wolfgang Beirl, Bernd A. Berg
We re-examine results of the Liouville theory and provide arguments that a {\it negative} bare cosmological constant is essential to define two-dimensional quantum gravity. From th…
Universality and Chaos in Quantum Field Theories
B. A. Berg, E. Bittner, M. -P. Lombardo +3
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…
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…
Brief Review of Multicanonical Simulations
Bernd A. Berg
Recent progress of simulations with non-canonical weight factors is summarized.
Multimagnetical Simulations
U. Hansmann, B. A. Berg, T. Neuhaus
We modified the recently proposed multicanonical MC algorithm for the case of a magnetic field driven order--order phase transition. We test this {\it multimagnetic} Monte Carlo al…