APPLICATION OF THE DISCRETE WENTZEL-KRAMERS-BRILLOUIN METHOD TO SPIN TUNNELING

Authors
GARG A
Citation
A. Garg, APPLICATION OF THE DISCRETE WENTZEL-KRAMERS-BRILLOUIN METHOD TO SPIN TUNNELING, Journal of mathematical physics, 39(10), 1998, pp. 5166-5179
Citations number
28
Categorie Soggetti
Physycs, Mathematical","Physycs, Mathematical
Journal title
Journal of mathematical physics → ACNP
ISSN journal
00222488
Volume
39
Issue
10
Year of publication
1998
Pages
5166 - 5179
Database
ISI
SICI code
0022-2488(1998)39:10<5166:AOTDWM>2.0.ZU;2-F
Abstract
A discrete version of the Wentzel-Kramers-Brillouin (WKB) method is de veloped and applied to calculate the tunnel splittings between classic ally degenerate states of spin Hamiltonians. The results for particula r model problems are in complete accord with those previously found us ing instanton methods. The discrete WKB method is more elementary and also yields wave functions. (C) 1998 American Institute of Physics. [S 0022-2488(98)03710-4].