Alexander K. Hartmann
Published 1999-04-21, updated 1999-04-27Version 2
Ground states of four-dimensional (d=4) EA Ising spin glasses are calculated for sizes up to 7x7x7x7 using a combination of a genetic algorithm and cluster-exact approximation. The ground-state energy of the infinite system is extrapolated as e_0=-2.095(1). The ground-state stiffness (or domain wall) energy D is calculated. A D~L^{\Theta} behavior with \Theta=0.65(4) is found which confirms that the d=4 model has an equilibrium spin-glass-paramagnet transition for non-zero T_c.
Comments: 5 pages, 3 figures, 31 references, revtex; update of references
Journal: Phys. Rev. E 60, 5135 (1999)
On the ground states of the Bernasconi model
Genetic embedded matching approach to ground states in continuous-spin systems
The Calculation of Two-Particle Quantities in the Typical Medium Dynamical Cluster Approximation
