Topological terms in one- and two-dimensional quantum Heisenberg antiferromagnets

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Abstract

We show that the Wess-Zumino kinetic terms of individual spins combine to provide nontrivial topological terms for one-dimensional antiferromagnetic spin chains but do not produce a Hopf term for antiferromagnets on two-dimensional squares lattices. This result suggests that some other mechanism is needed to account for the neutral fermions which may be present in high-Tc materials.

Original languageEnglish (US)
Pages (from-to)7215-7218
Number of pages4
JournalPhysical Review B
Volume38
Issue number10
DOIs
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • Condensed Matter Physics

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