Dynamics of scattered atoms in a multiple-momentum Bose-Einstein condensate

ORAL

Abstract

The study of momentum-correlated scattering between atoms in a Bose Einstein condensate has revealed remarkable complexity that challenges the theoretical description of experimental observations. This kind of system serves as an ideal platform for quantum simulating various intriguing physical phenomena, such as Landau-Zener tunneling, Bloch oscillations, and dynamics of topologically non-trivial states. We employ the truncated Wigner approximation (TWA) to numerically model the dynamics of a condensate with multiple momentum states. Our simulations revealed two distinct regimes: one characterized by the predominant influence of quantum fluctuations induced scattering, and the other where the dynamics align with mean-field physics. Additionally, to comprehend the interplay between quantum fluctuations and thermal fluctuations, we study the dynamics of the system at finite temperatures. This investigation aims to elucidate the fate of the system after a long time dynamics, which is expected to shed light on the thermalization of closed quantum systems.

*Support from the fund of Claire & William Band Distinguished Professorship in Physics at Washington State University is highly acknowledged

–

Presenters

  • Federico Serrano

    • Washington State University

Authors

  • Federico Serrano

    • Washington State University

  • Annesh Mukhopadhyay

    • Washington State University

  • Colby Schimelfenig

    • Washington State University

  • Doerte Blume

    • University of Oklahoma
    • The University of Oklahoma
    • Homer L. Dodge Department of Physics and Astronomy and Center for Quantum Research and Technology, University of Oklahoma, Norman, USA
    • Homer L. Dodge Department of Physics and Astronomy, Center for Quantum Research and Technology, The University of Oklahoma, Norman, Oklahoma

  • Peter W Engels

    • Washington State University

  • Qingze Guan

    • Washington State University