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ASPECTS OF DUALITY IN NODAL LIQUIDS

NICK E. MAVROMATOS

Department of Physics, Theoretical Physics King's College London, Strand, London WC2R 2LS, UK

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and

SARBEN SARKAR

Department of Physics, Theoretical Physics King's College London, Strand, London WC2R 2LS, UK

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https://doi.org/10.1142/S0217979203015747Cited by:2 (Source: Crossref)

Abstract

Starting from a microscopic t–J like model and a SU(2) spin-charge separation ansatz, a relativistic continuum gauge Lagrangian is obtained in the vicinity of a nodal point of the Fermi surface. The excitations in the pseudogap phase are described by topological excitations in the dual model which has a Z₂ global symmetry due to the effect of instantons. Confinement of spinon and holons emerge from this picture. The adjoint and fundamental strings are associated with stripes. As the spin gap decreases a local Z₂ symmetry emerges.

Keywords:

PACS: 11.15.Me, 74.20.Mn

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