Quantum phase transitions in frustrated quantum antiferromagnets

Andrey V. Chubukov, Subir Sachdev, T. Senthil

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Abstract

We study frustrated, two-dimensional, quantum antiferromagnets in the vicinity of a quantum transition from a non-collinear, magnetically ordered ground state to a quantum-disordered phase. The general scaling properties of this transition are described. A detailed study of a particular field-theoretic model of the transition, with bosonic spin- 1 2 spinon fields, is presented. Explicit universal scaling forms for a variety of observables are obtained and the results are compared with numerical data on the spin- 1 2 triangular antiferromagnet. Universal properties of an alternative field theory, with confined spinons, are also briefly noted.

Original languageEnglish (US)
Pages (from-to)601-643
Number of pages43
JournalNuclear Physics, Section B
Volume426
Issue number3
DOIs
StatePublished - Sep 19 1994

Bibliographical note

Funding Information:
The research was supported by NSF Grant No. DMR-92 24290. We are pleased to thank P. Azaria, B. Delamott, P. Lechmenniat, D. Mouhanna, and N. Read for useful discussions and communications.

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