Application of the discrete Wentzel-Kramers-Brillouin method to spin tunneling

Details Application of the discrete Wentzel-Kramers-Brillouin method to spin tunneling Application of the discrete Wentzel-Kramers-Brillouin method to spin tunneling

1999-07-13

arxiv.org/abs/cond-mat/9907197v1

J. Math. Phys. 39 (1998) 5166

Physics

Condensed Matter

RevTex, 2ps figures, incorporates errata (typos and omitted reference) in JMP paper

Scientific paper

10.1063/1.532563

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.

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