Critical structure factor in using systems.
We perform a large-scale Monte Carlo simulation of the three-dimensional Ising model on simple cubic lattices of size L(3) with L=128 and 256. We determine the corresponding structure factor (Fourier transform of the two-point function) and compare it with several approximations and with experimental results. We also compute the turbidity as a function of the momentum of the incoming radiation, focusing in particular on the deviations from the Ornstein-Zernike expression of Puglielli and Ford.
Martín-Mayor
Victor
V
Dipartimento di Fisica dell'Università di Roma La Sapienza and INFN, I-00185 Roma, Italy. Victor.Martin@roma1.infn.it
Pelissetto
Andrea
A
Vicari
Ettore
E