Ground-state energy and entropy of the two-dimensional Edwards-Anderson   spin-glass model with different bond distributions
  We study the two-dimensional Edwards-Anderson spin-glass model using a parallel tempering Monte Carlo algorithm. The ground-state energy and entropy are calculated for different bond distributions. In particular, the entropy is obtained by using a thermodynamic integration technique and an appropriate reference state, which is determined with the method of high-temperature expansion. This strategy provide accurate values of this quantity for finite-size lattices. By extrapolating to the thermodynamic limit, the ground-state energy and entropy of the different versions of the spin-glass model are determined. 
D. J. Perez-Morelo, A. J. Ramirez-Pastor, F. Roma
cond-mat.stat-mech cond-mat.dis-nn