Application of the discrete WKB method to spin tunneling
نویسنده
چکیده
A discrete version of the WKB method is developed and applied to calculate the tunnel splittings between classically degenerate states of spin Hamiltonians. The results for particular model problems are in complete accord with those previously found using instanton methods. The discrete WKB method is more elementary and also yields wavefunctions. 03.65.Sq, 33.20.-t, 75.45.+j Typeset using REVTEX
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