Distributions of the metastable energy levels and the internal magnetic fields in spin glasses

F. Tanaka, H. Nishimori

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Energy distributions in the metastable states of spin glasses are studied for two-component spin systems in the limit of infinitely long-ranged exchange interactions. To determine how fundamental properties change by spin symmetry, the Edwards-Anderson model is extended to the vector Potts model, each spin of which can take only n directions in a plane. The authors' theory includes both n=2 (Ising model) and n to infinity limit (XY model). The upper limit of the average ground-state energy per spin is evaluated to be -0.594 J for the XY model. The internal magnetic field distribution P(h) is also studied. For n>or=3, its small h behaviour is found to be quite different from that of the Ising model.

Original languageEnglish
Article number010
Pages (from-to)1237-1247
Number of pages11
JournalJournal of Physics F: Metal Physics
Volume11
Issue number6
DOIs
Publication statusPublished - 1981 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Metals and Alloys

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