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Replica symmetry breaking in and around six dimensions

2011/11/14 by Giorgio Parisi, T. Temesvári, Tamas Temesvari · 1 citation
Physics and Astronomy · #Complex Network Analysis Techniques #Quantum many-body systems #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.stat-mech

paper · pdf · doi:10.1016/j.nuclphysb.2012.01.014

published as Nucl. Phys. B 858, 293-316 (2012) · 28 pages,4 figures

arxiv created 2011/11/14 · openalex publication_date 2012/01/18 · arxiv updated 2012/02/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Two, replica symmetry breaking specific, quantities of the Ising spin glass --- the breakpoint x1 of the order parameter function and the Almeida-Thouless line --- are calculated in six dimensions (the upper critical dimension of the replicated field theory used), and also below and above it. The results comfirm that replica symmetry breaking does exist below d=6, and also the tendency of its escalation for decreasing dimension continues. As a new feature, x1 has a nonzero and universal value for d<6 at criticality. Near six dimensions we have x1=3(6-d)+O[(6-d)2]. A method to expand a generic theory with replica equivalence around the replica symmetric one is also demonstrated.

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