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- W2041521289 abstract "The Gutzwiller projection of the Schwinger-boson mean-field solution of the 2-d spin-12 antiferromagnet in a square lattice is shown to produce the optimized, parameter-free RVB ground state. We get −0.6688J/site and 0.311 for the energy and the staggered magnetization. The spectrum of the excited states is found to be linear and gapless near k≅0. Our calculation suggests, upon breaking of the rotational symmetry, ϵk≅2JZr1−γ2k with Zr≅1.23." @default.
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- W2041521289 date "1993-10-01" @default.
- W2041521289 modified "2023-10-14" @default.
- W2041521289 title "Optimized RVB states of the 2-d antiferromagnet: ground state and excitation spectrum" @default.
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- W2041521289 doi "https://doi.org/10.1016/0375-9601(93)90391-c" @default.
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