Disordered SU(N) antiferromagnets and the renormalization of charged instanton gases in three dimensions

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10 Scopus citations

Abstract

Some generic properties of charged instanton gases are established in arbitrary dimension, including the fact that the self-energy, if it diverges, must diverge as the logarithm of the correlation length. A real-space renormalization is carried out in d=3 and recursion relations obtained under the assumption that the model can disorder without instantons. They reveal that for models with nontrivial Haldane phases, the correlation-length exponent is not altered by hedgehogs, and that generic instanton gases undergo first-order transitions in three dimensions. In special cases a second-order transition with continuously varying exponents is found.

Original languageEnglish
Pages (from-to)911-914
Number of pages4
JournalPhysical Review Letters
Volume67
Issue number7
DOIs
StatePublished - 1991

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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