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Spin Current Correlation and Ferromagnetism. III
1973
Progress of theoretical physics
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The ansatz on the down-spin current correlation required for our previous proof of the theorem E(N/2)~E((N/ 2) -1) is recast into an obvious form in the case of free fermions 1 '• 2 ' in a cyclic box. We start with the Hamiltonian where V(r1+r, r2+r, ···, rN+r)
doi:10.1143/ptp.49.1772
fatcat:wfg44viqczbqzm2mdf6my4haaa