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arXiv · cond-mat/9811423

Energy barriers of spin glasses from multi-overlap simulations

Wolfhard Janke·Bernd A. Berg·Alain Billoire
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Abstract

We report large-scale simulations of the three-dimensional Edwards-Anderson Ising spin glass system using the recently introduced multi-overlap Monte Carlo algorithm. In this approach the temperature is fixed and two replica are coupled through a weight factor such that a broad distribution of the Parisi overlap parameter $q$ is achieved. Canonical expectation values for the entire $q$-range (multi-overlap) follow by reweighting. We present an analysis of the performance of the algorithm and in particular discuss results on spin glass free-energy barriers which are hard to obtain with conventional algorithms. In addition we discuss the non-trivial scaling behavior of the canonical $q$-distributions in the broken phase.

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Wolfhard Janke, Bernd A. Berg, Alain Billoire. 1998-11-30. Energy barriers of spin glasses from multi-overlap simulations. https://doi.org/10.1002/(sici)1521-3889(199811)7%3A5%2F6%3C544%3A%3Aaid-andp544%3E3.0.co%3B2-1

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