Quench dynamics of a weakly interacting disordered Bose gas in momentum space

14Citations
Citations of this article
6Readers
Mendeley users who have this article in their library.

Abstract

We study theoretically the out-of-equilibrium dynamics in momentum space of a weakly interacting disordered Bose gas launched with a finite velocity. In the absence of interactions, coherent multiple scattering gives rise to a background of diffusive particles, on top of which a coherent backscattering interference emerges. We revisit this scenario in the presence of interactions, using a diagrammatic quantum transport theory. We find that the dynamics is governed by coupled kinetic equations describing the thermalization of the diffusive and coherent components of the gas. This phenomenon leads to a destruction of coherent backscattering, well described by an exponential relaxation whose rate is controlled by the particle collision time. These predictions are confirmed by numerical simulations.

Cite

CITATION STYLE

APA

Scoquart, T., Wellens, T., Delande, D., & Cherroret, N. (2020). Quench dynamics of a weakly interacting disordered Bose gas in momentum space. Physical Review Research, 2(3). https://doi.org/10.1103/PhysRevResearch.2.033349

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free