Bereczuk, Andreas and Dietz, Barbara and Che, Jiongning and Kuipers, Jack and Urbina, Juan-Diego and Richter, Klaus (2021) Universal S-matrix correlations for complex scattering of wave packets in noninteracting many-body systems: Theory, simulation, and experiment. PHYSICAL REVIEW E, 103 (5): 052209. ISSN 2470-0045, 2470-0053
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We present an in-depth study of the universal correlations of scattering-matrix entries required in the framework of nonstationary many-body scattering of noninteracting indistinguishable particles where the incoming states are localized wave packets. Contrary to the stationary case, the emergence of universal signatures of chaotic dynamics in dynamical observables manifests itself in the emergence of universal correlations of the scattering matrix at different energies. We use a semiclassical theory based on interfering paths, numerical wave function based simulations, and numerical averaging over random-matrix ensembles to calculate such correlations and compare with experimental measurements in microwave graphs, finding excellent agreement. Our calculations show that the universality of the correlators survives the extreme limit of few open channels relevant for electron quantum optics, albeit at the price of dealing with large-cancellation effects requiring the computation of a large class of semiclassical diagrams.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUANTUM; FLUCTUATIONS; PROBE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Sep 2022 15:46 |
| Last Modified: | 16 Sep 2022 15:46 |
| URI: | https://pred.uni-regensburg.de/id/eprint/47572 |
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