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NEUTRAL FERMIONS IN EFFECTIVE GAUGE FIELD THEORIES OF DOPED MOTT INSULATORS

Authors
  • Aitchison, I.J.R.
  • Mavromatos, N.E.
Publication Date
Aug 25, 1988
Identifiers
DOI: 10.1103/PhysRevB.39.6544
OAI: oai:inspirehep.net:24269
Source
INSPIRE-HEP
Keywords
License
Unknown
External links

Abstract

The origin of neutral fermions in two-dimensional Mott insulators is discussed in the context of solitonic solutions of effective gauge theories which describe the continuum limit. It is argued that in the undoped, exactly half-filled case, the solitons are bosons, but that in the doped case a topological (Hopf) term will be induced, which will make the solitons fermionic. In the latter case, they may be identified with the neutral fermions of the resonating-valence-bond theory, as suggested by Wiegmann and Dzyaloshinskii and co-workers.

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