Berlin 2018 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 66: Poster: Stat. Phys. (Gen., Critical Phen., Biol.)

DY 66.4: Poster

Thursday, March 15, 2018, 15:30–18:00, Poster A

Non-Flat Histogram Techniques for Spin Glasses — •Fabio Mueller, Stefan Schnabel, and Wolfhard Janke — Institut fuer Theoretische Physik, Universitaet Leipzig, Postfach 100 920, 04009 Leipzig, Germany

We take into consideration the 3D Edwards-Anderson model with bimodal bond distribution. The spin-glass nature of the model implies that finding ground states is an NP-hard problem. The round-trip times, defined as the time one simulation method needs for a specific disorder realization in order to travel from the ground state to the high energy region and back therefore reflects the ability of the method to solve that specific optimization problem.

Employing different simulation techniques the round-trip time distributions are investigated and the performance of the different methods is compared. The methods taken into consideration are among the most established broad-energy ensemble methods including the parallel-tempering method and, in addition, a specially designed non-flat histogram technique which is shown to outperform the currently existing methods.