Engl, Thomas and Dujardin, Julien and Arguelles, Arturo and Schlagheck, Peter and Richter, Klaus and Urbina, Juan Diego (2014) Coherent Backscattering in Fock Space: A Signature of Quantum Many-Body Interference in Interacting Bosonic Systems. PHYSICAL REVIEW LETTERS, 112 (14): 140403. ISSN 0031-9007, 1079-7114
Full text not available from this repository.Abstract
We predict a generic signature of quantum interference in many-body bosonic systems resulting in a coherent enhancement of the average return probability in Fock space. This enhancement is robust with respect to variations of external parameters even though it represents a dynamical manifestation of the delicate superposition principle in Fock space. It is a genuine quantum many-body effect that lies beyond the reach of any mean-field approach. Using a semiclassical approach based on interfering paths in Fock space, we calculate the magnitude of the backscattering peak and its dependence on gauge fields that break time-reversal invariance. We confirm our predictions by comparing them to exact quantum evolution probabilities in Bose-Hubbard models, and discuss their relevance in the context of many-body thermalization.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | GAS; LOCALIZATION; ATOMS; RELAXATION; LATTICE; LIGHT; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Nov 2019 10:08 |
| Last Modified: | 14 Nov 2019 10:08 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10317 |
Actions (login required)
 |
View Item |
