Extracting partition function zeros from Fukui-Todo simulations

Abstract

The Fukui-Todo algorithm is an important element of the array of simulational approaches to tackling critical phenomena in statistical physics. The partition-function-zero approach is of fundamental importance to understanding such phenomena and a precise tool to measure their properties. However, because the Fukui-Todo algorithm bypasses sample-by-sample energy computation, zeros cannot easily be harnessed through the energy distribution. Here this obstacle is overcome by a novel reweighting technique and zero-detection protocol. The efficacy of the approach is demonstrated in simple iconic models which feature transitions of both first and second order.

submitted to EPL

References in corpus (3)

• Order-N Cluster Monte Carlo Method for Spin Systems with Long-range Interactions
• Equivalent-neighbor Potts models in two dimensions
• Nonequilibrium critical relaxations of the order parameter and energy in the two-dimensional ferromagnetic Potts model