Instabilities, nonhermiticity and exceptional points in the cranking model
arXiv:0709.4105 · doi:10.1088/1751-8113/40/31/022
Abstract
A cranking harmonic oscillator model, widely used for the physics of fast rotating nuclei and Bose-Einstein condensates, is re-investigated in the context of PT-symmetry. The instability points of the model are identified as exceptional points. It is argued that - even though the Hamiltonian appears hermitian at first glance - it actually is not hermitian within the region of instability.
4 pages, 1 figure
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