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Zero-temperature properties of quantum spin models on the triangular lattice III: the Heisenberg antiferromagnet
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1987
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Quantum Lattice SystemEngineeringMany-body Quantum PhysicSpin SystemsOne-dimensional MagnetismSite Triangular LatticeSpin PhenomenonMagnetismQuantum MaterialsStrong CorrelationsPlaquette Chirality OrderQuantum ScienceSpin-orbit EffectsTriangular Lattice IiiPhysicsQuantum Spin ModelsZero-temperature PropertiesCondensed Matter TheoryQuantum MagnetismNatural SciencesApplied PhysicsCondensed Matter PhysicsFour-spin Correlations
The calculation of two- and four-spin correlations of the [Formula: see text] Heisenberg antiferromagnet has been extended to an N = 21 site triangular lattice. The infinite-lattice ground state energy per bond is estimated to be E 0 /3NJ = −0.3678 ± 0.005 by fitting a quadratic in 1/N to the finite N data. The plaquette chirality order is slightly greater than in the XY antiferromagnet. The two-spin correlation is conjectured to decay as [Formula: see text].