Phys. Rev. Lett. 92, 010401 (2004) [4 pages]Bohr-Sommerfeld Quantization of Spin HamiltoniansReceived 4 April 2003; published 8 January 2004 The Bohr-Sommerfeld rule for a spin system is obtained, including the first quantum corrections. The rule applies to both integer and half-integer spin. It is tested for various models, in particular, the Lipkin-Meshkov-Glick model, and found to agree very well with exact results. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.010401
DOI:
10.1103/PhysRevLett.92.010401
PACS:
03.65.Sq, 02.30.Gp, 03.65.Db, 21.60.Ev
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