Emergence of Quantum Chaos in Finite Interacting Fermi Systems
- 8 September 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 79 (10) , 1837-1840
- https://doi.org/10.1103/physrevlett.79.1837
Abstract
We study the level spacing statistics in many-body Fermi systems and determine a critical two-body interaction strength at which a crossover from Poisson to Wigner-Dyson statistics takes place. Near the Fermi level, the results allow one to find a critical temperature above which quantum chaos and thermalization set in.
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