Neel order in the two-dimensional S=1/2 Heisenberg Model
arXiv:0704.0713 · doi:10.1103/PhysRevB.76.220409
Abstract
The existence of Neel order in the S=1/2 Heisenberg model on the square lattice at T=0 is shown using inequalities set up by Kennedy, Lieb and Shastry in combination with high precision Quantum Monte Carlo data.
4 pages, 1 figure
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