Nonflat histogram techniques for spin glasses.

Müller, Fabio; Schnabel, Stefan; Janke, Wolfhard · Phys Rev E · 2020

basic_science · Level V

Where this comes from

Abstract

We study the bimodal Edwards-Anderson spin glass comparing established methods, namely the multicanonical method, the 1/k ensemble, and parallel tempering, to an approach where the ensemble is modified by simulating power-law-shaped histograms in energy instead of flat histograms as in the standard multicanonical case. We show that by this modification a significant speed-up in terms of mean round-trip times can be achieved for all lattice sizes taken into consideration.