Universal amplitude ratios in the 3D Ising Universality Class

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 A_+/A_-=0.536(2) and C_+/C_-=4.713(7), where A_+- and C_+- 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.

18 pages, two figures, typos corrected, discussion on finite size corrections extended

References in corpus (3)

• A Finite Size Scaling Study of Lattice Models in the three-dimensional Ising Universality Class
• A Monte Carlo study of the three-dimensional XY universality class:Universal amplitude ratios
• Specific heat of the simple-cubic Ising model

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