New O(3) transition in three dimensions

Michael Kamal, Ganpathy Murthy

Research output: Contribution to journalArticlepeer-review

49 Scopus citations


A three-dimensional lattice of Heisenberg spins with nearest-neighbor interactions is studied by numerical simulation under the constraint that no free topological singularities (hedgehogs) are allowed. Only nearest-neighbor pairs of oppositely charged hedgehogs are permitted in the sum over configurations. A disordering transition with exponents different from the usual Heisenberg transition is found and tentatively identified as a pure spin wave disordering transition.

Original languageEnglish
Pages (from-to)1911-1914
Number of pages4
JournalPhysical Review Letters
Issue number12
StatePublished - 1993

ASJC Scopus subject areas

  • General Physics and Astronomy


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