Abstract
We use a continuous-time path integral to obtain the semiclassical propagator for minimal-spread spin coherent states. We pay attention to the extra phase. This extra correction of phase is related to an anomaly in the fluctuation determinant. We show that if this extra factor is included, the semiclassical propagator has the correct short time behaviour to O(T2), and demonstrate its consistency under dissection of the path.
Original language | English (US) |
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Pages (from-to) | 3220-3222 |
Number of pages | 3 |
Journal | International Journal of Modern Physics B |
Volume | 15 |
Issue number | 24-25 |
DOIs | |
State | Published - Oct 10 2001 |
Funding
Work at Urbana and Evanston was supported by the National Science Foundation under grants DMR-98-17941 and DMR-9616749, respectively. MS would also like to thank the TCM at the Cavendish Laboratory, Cambridge, England, for hospitality, and the EPSRC for financial support under grant number GR/N00364.
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Condensed Matter Physics