First-order phase transitions in quantum-mechanical tunneling models
- 1 September 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 60 (9) , 6662-6667
- https://doi.org/10.1103/physrevb.60.6662
Abstract
A criterion is derived for the determination of parameter domains of first-order phase transitions in quantum-mechanical tunneling models. The criterion is tested by application to various models, in particular to some that have been used recently to explore spin tunneling in macroscopic particles. In each case agreement is found with previously heuristically determined domains.Keywords
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