Novel order parameter to describe the critical behavior of Ising spin glass models

F. Romá, F. Nieto, A.J. Ramirez-Pastor and E.E. Vogel

Physica A: Statistical Mechanics and its Applications, 2006, vol. 363, issue 2, 327-333

Abstract: A novel order parameter Φ for spin glasses is defined based on topological criteria and with a clear physical interpretation. Φ is first investigated for well known magnetic systems and then applied to the Edwards–Anderson ±J model on a square lattice, comparing its properties with the usual q order parameter. Finite size scaling procedures are performed. Results and analyses based on Φ confirm a zero temperature phase transition and allow to identify the low temperature phase. The advantages of Φ are brought out and its physical meaning is established.

Keywords: Lattice theory and statistics; Spin-glass and other random models; Phase transitions (search for similar items in EconPapers)
Date: 2006
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:363:y:2006:i:2:p:327-333

DOI: 10.1016/j.physa.2005.08.052

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