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

Anupam Garg*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

A discrete version of the Wentzel-Kramers-Brillouin (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 wave functions.

Original languageEnglish (US)
Pages (from-to)5166-5179
Number of pages14
JournalJournal of Mathematical Physics
Volume39
Issue number10
DOIs
StatePublished - Oct 1998

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics

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