Adiabatic Geometric Phases and Response Functions
- 26 January 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 80 (4), 650-653
- https://doi.org/10.1103/physrevlett.80.650
Abstract
Treating a many-body Fermi system in terms of a single particle in a deforming mean field, we relate adiabatic geometric phase to susceptibility for the noncyclic case, and to its derivative for the cyclic case. Employing the semiclassical expression of the susceptibility, the expression for geometric phase for chaotic quantum system immediately follows. Exploiting the well-known association of the absorptive part of susceptibility with dissipation, our relations may provide a quantum mechanical origin of the damping of collective excitations in Fermi systems.Keywords
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