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Binary Bose-Einstein condensates in a disordered time-dependent potential
Karima Abbas1,2, Abdelâali Boudjemâa1,2
1Department of Physics, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, PO Box 78, 02000, Ouled-Fares, Chlef, Algeria.
Journal of Physics. Condensed Matter : an Institute of Physics Journal
|December 20, 2021
Summary
Disorder and interspecies interactions drive binary Bose-Einstein condensates out of equilibrium. This study reveals how these factors promote density increase and species localization, leading to unique non-equilibrium steady states.
Area of Science:
- Quantum physics
- Condensed matter physics
- Atomic physics
Background:
- Bose-Einstein condensates (BECs) are quantum states of matter.
- Non-equilibrium dynamics in BECs are crucial for understanding quantum systems.
- Disorder and interspecies interactions significantly influence BEC behavior.
Purpose of the Study:
- Investigate the non-equilibrium evolution of binary Bose-Einstein condensates.
- Analyze the interplay between disorder and interspecies interactions.
- Explore the emergence of steady states in disordered BECs.
Main Methods:
- Time-dependent perturbation theory applied to binary BECs.
- Construction of a closed set of equations for system dynamics.
- Analytical and numerical simulations of condensate evolution.
Main Results:
- Disorder and interspecies interactions induce density increase and species localization over time.
- The system exhibits a periodically changing steady state.
- Dynamical corrections suggest the formation of stationary out-of-equilibrium states.
Conclusions:
- The interplay of disorder and interactions drives BECs towards localization.
- Disordered binary BECs can evolve into unique non-equilibrium steady states.
- Understanding these dynamics is key for realizing Floquet condensates.
Keywords:
Bose–Bose mixturecondensate deformationnonequilibrium steady statetime-dependent perturbation theorytime-periodic disorder potentialMore Related Videos
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