Quantum Dynamics of Ultracold Bose Polarons.

  title={Quantum Dynamics of Ultracold Bose Polarons.},
  author={Yulia E. Shchadilova and Richard Schmidt and Fabian Grusdt and Eugene A. Demler},
  journal={Physical review letters},
  volume={117 11},
We analyze the dynamics of Bose polarons in the vicinity of a Feshbach resonance between the impurity and host atoms. We compute the radio-frequency absorption spectra for the case when the initial state of the impurity is noninteracting and the final state is strongly interacting with the host atoms. We compare results of different theoretical approaches including a single excitation expansion, a self-consistent T-matrix method, and a time-dependent coherent state approach. Our analysis… CONTINUE READING
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