Quench Dynamics in Bose condensates in the Presence of a Bath: Theory and Experiment
arXiv:1305.4594 · doi:10.1103/PhysRevA.88.031601
Abstract
In this paper we study the transient dynamics of a Bose superfluid subsequent to an interaction quench. Essential for equilibration is a source of dissipation which we include following the approach of Caldeira and Leggett. Here we solve the equations of motion exactly by integrating out an environmental bath. We thereby derive precisely the time dependent density correlation functions with the appropriate analytic and asymptotic properties. The resulting structure factor exhibits the expected damping and thereby differs from that of strict Bogoliubov theory. These damped sound modes, which reflect the physics beyond mean field approaches, are characterized and the structure factors are found to compare favorably with experiment.
5 pages, 2 figures
References in corpus (2)
Cited by in corpus (21)
- Quenching to unitarity: Quantum dynamics in a 3D Bose gas
- Quench dynamics of a strongly interacting resonant Bose gas
- Bound-state signatures in quenched Bose-Einstein condensates
- Identifying a bath-induced Bose liquid in interacting spin-boson models
- Relaxation dynamics of the Lieb-Liniger gas following an interaction quench: A coordinate Bethe-ansatz analysis
- Relaxation dynamics in a Hubbard dimer coupled to fermionic baths: phenomenological description and its microscopic foundation
- Observation of quasiparticle pair-production and quantum entanglement in atomic quantum gases quenched to an attractive interaction
- Equilibrating dynamics in quenched Bose gases: characterizing multiple time regimes
- Nonequilibrium States of a Quenched Bose Gas
- Post-quench dynamics and pre-thermalization in a resonant Bose gas
- Interacting lattice systems with quantum dissipation: a quantum Monte Carlo study
- Ballistic quench-induced correlation waves in ultracold gases
- Quantum sweeps, synchronization, and Kibble-Zurek physics in dissipative quantum spin systems
- Bosonic thermoelectric transport and breakdown of universality
- Environment induced pre-thermalization in the Mott-Hubbard model
- Quantum fluctuation effects on the quench dynamics of thermal quasicondensates
- Universal long-time behavior of stochastically driven interacting quantum systems
- Quantum kinetics of quenched two-dimensional Bose superfluids
- Correlation evolution in dilute Bose-Einstein condensates after quantum quenches
- Stability and Dynamics of Atom-Molecule Superfluids Near a Narrow Feshbach Resonance
- Two-spinon effects on the thermal Tonks-Girardeau gas