Driven impurity in an ultracold 1D Bose gas with intermediate interaction strength

ORAL

Abstract

We study a single impurity driven by a constant force through a 1D Bose gas using a Lieb-Liniger based approach. Our calculaton is exact in the interaction amongst the particles in the Bose gas, and is perturbative in the interaction between the gas and the impurity. In contrast to previous studies of this problem, we are able to handle arbitrary interaction strength for the Bose gas. We find very good agreement with recent experiments [Phys. Rev. Lett. 103, 150601 (2009)].

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Authors

  • Jean-Sebastien Caux

    University of Amsterdam

  • Steve Simon

    University of Oxford

  • Claudio Castelnovo

    University of Cambridge, TCM group, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK, Cambridge University