Emergence of quantum chaos in finite interacting Fermi systems
classification
❄️ cond-mat
chao-dynnlin.CD
keywords
fermichaoscriticallevelquantumstatisticssystemsabove
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We study the level spacing statistics P(s) in many-body Fermi systems and determine a critical two-body interaction strength Uc at which a crossover from Poisson to Wigner-Dyson statistics takes place. Near the Fermi level the results allow to find a critical temperature Tch above which quantum chaos and thermalization set in.
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