Projected wave functions for fractionalized phases of quantum spin systems

Details Projected wave functions for fractionalized phases of quantum spin systems Projected wave functions for fractionalized phases of quantum spin systems

2002-04-02

arxiv.org/abs/cond-mat/0204043v1

Phys. Rev. B 66, 115111 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 3 figures

Scientific paper

10.1103/PhysRevB.66.115111

Gutzwiller projection allows a construction of an assortment of variational wave functions for strongly correlated systems. For quantum spin S=1/2 models, Gutzwiller-projected wave functions have resonating-valence-bond structure and may represent states with fractional quantum numbers for the excitations. Using insights obtained from field-theoretical descriptions of fractionalization in two dimensions, we construct candidate wave functions of fractionalized states by projecting specific superconducting states. We explicitly demonstrate the presence of topological order in these states.

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