Aspects of Duality in Nodal Liquids

Details Aspects of Duality in Nodal Liquids Aspects of Duality in Nodal Liquids

2002-10-10

arxiv.org/abs/cond-mat/0210248v1

Int.J.Mod.Phys.B17:251-272,2003

Physics

Condensed Matter

Strongly Correlated Electrons

15 pages revtex, no figures

Scientific paper

10.1142/S0217979203015747

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 Z_2 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 Z_2 symmetry emerges.

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