Quantum Behavior of a Heavy Impurity Strongly Coupled to a Bose Gas.

  title={Quantum Behavior of a Heavy Impurity Strongly Coupled to a Bose Gas.},
  author={Jesper Levinsen and Luis A. Pe{\~n}a Ardila and Shuhei M. Yoshida and Meera M. Parish},
  journal={Physical review letters},
  volume={127 3},
We investigate the problem of an infinitely heavy impurity interacting with a dilute Bose gas at zero temperature. When the impurity-boson interactions are short-ranged, we show that boson-boson interactions induce a quantum blockade effect, where a single boson can effectively block or screen the impurity potential. Since this behavior depends on the quantum granular nature of the Bose gas, it cannot be captured within a standard classical-field description. Using a combination of exact… 

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