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The ground state of AFM Heisenberg model $H=+J\displaystyle \sum_{\langle i,j\rangle} \vec{S}_i \cdot \vec{S}_j$ on the triangular lattice?
What is the order -- the ground state of AFM Heisenberg model $H=+J\displaystyle \sum_{\langle i,j\rangle}\vec{S}_i \cdot \vec{S}_j$ on the triangular lattice, with $J>0$ and nearest neighbor ...
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