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DY: Fachverband Dynamik und Statistische Physik

DY 7: Statistical Physics (General) I

DY 7.9: Vortrag

Montag, 16. März 2020, 12:15–12:30, ZEU 160

Non-Flat Histogram Techniques for Spin Glasses — •Fabio Mueller, Stefan Schnabel, and Wolfhard Janke — Institut für Theoretische Physik, Universität Leipzig, IPF 231101, 04081 Leipzig, Germany

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.