Abstract
We compute a number of universal amplitude ratios in the three-dimensional Ising universality class. To this end, we perform Monte Carlo simulations of the improved Blume-Capel model on the simple cubic lattice. For example, we obtain and , where and are the amplitudes of the specific heat and the magnetic susceptibility, respectively. The subscripts and indicate the high- and the low-temperature phase, respectively. We compare our results with those obtained from previous Monte Carlo simulations, high- and low-temperature series expansions, field theoretic methods, and experiments.
- Received 11 May 2010
DOI:https://doi.org/10.1103/PhysRevB.82.174434
©2010 American Physical Society