TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.10.1.008
TI  - Non-equilibrium evolution of Bose-Einstein condensate deformation in temporally controlled weak disorder
PY  - 2021/01/14
UR  - https://scipost.org/SciPostPhys.10.1.008
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 10
IS  - 1
SP  - 008
A1  - Radonjic, Milan
AU  - Pelster, Axel
AB  - We consider a time-dependent extension of a perturbative mean-field approach to the homogeneous dirty boson problem by considering how switching on and off a weak disorder potential affects the stationary state of an initially equilibrated Bose-Einstein condensate by the emergence of a disorder-induced condensate deformation. We find that in the switch on scenario the stationary condensate deformation turns out to be a sum of an equilibrium part, that actually corresponds to adiabatic switching on the disorder, and a dynamically-induced part, where the latter depends on the particular driving protocol. If the disorder is switched off afterwards, the resulting condensate deformation acquires an additional dynamically-induced part in the long-time limit, while the equilibrium part vanishes. We also present an appropriate generalization to inhomogeneous trapped condensates. Our results demonstrate that the condensate deformation represents an indicator of the generically non-equilibrium nature of steady states of a Bose gas in a temporally controlled weak disorder.
ER  -

@Article{10.21468/SciPostPhys.10.1.008,
	title={{Non-equilibrium evolution of Bose-Einstein condensate deformation in temporally controlled weak disorder}},
	author={Milan Radonjić and Axel Pelster},
	journal={SciPost Phys.},
	volume={10},
	pages={008},
	year={2021},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.10.1.008},
	url={https://scipost.org/10.21468/SciPostPhys.10.1.008},
}