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Showing 2012 · math-phShow all
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math-ph2012★ 10 cited
The Free Energy of the Quantum Heisenberg Ferromagnet at Large Spin
M. Correggi, A. Giuliani
We consider the spin-S ferromagnetic Heisenberg model in three dimensions, in the absence of an external field. Spin wave theory suggests that in a suitable temperature regime the…
math-ph2012★ 30 cited
The scaling limit of the energy correlations in non integrable Ising models
Alessandro Giuliani, Rafael L. Greenblatt, Vieri Mastropietro
We obtain an explicit expression for the multipoint energy correlations of a non solvable two-dimensional Ising models with nearest neighbor ferromagnetic interactions plus a weak…