The ground state of the cubic spin glass with short-range interactions of Gaussian distribution

Ground states of the three-dimensional Edwards-Anderson spin glass with exchange interactions of Gaussian distribution were determined with a hybrid of genetic algorithm and local optimization. Large samples were considered between linear sizes of 3 and 10 to determine the average ground state energies accurately. The results follow a linear dependence on 1/volume quite accurately. The extrapolated value for the ground state energy per spin for the infinite system is −1.7003±0.0008.