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Effective (2+1)-dimensional gauge theory of spin and charge degrees of freedom with Chern-Simons coupling

Journal Article · · Physical Review Letters; (USA)
;  [1]
  1. Department of Theoretical Physics, 1 Keble Road, Oxford OX1 3NP, United Kingdom (GB)
An effective-gauge-field-theory model of a doped Mott insulator is generalized so as to be electromagnetically gauge invariant. It is proposed that three Chern-Simons terms enter, one involving the spin gauge field, another the electromagnetic field, and the third a coupling between them. A model-independent topological argument is given for the quantization of the coefficients of these Chern-Simons terms. Physical consequences are noted, including a possible relationship between the Hall fraction and the effective spin of the excitation quanta.
OSTI ID:
7016506
Journal Information:
Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 63:24; ISSN PRLTA; ISSN 0031-9007
Country of Publication:
United States
Language:
English