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arXiv · 2401.11808

Weak and strong coupling polarons in binary Bose-Einstein condensates

Ning Liu
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Abstract

The Bose polaron is a quasiparticle that arises from the interaction between impurities and Bogoliubov excitation in Bose-Einstein condensates, analogous to the polaron formed by electrons and phonons in solid-state physics. In this paper, we investigate the effect of phase separation on weakly coupled and strongly coupled Bose polarons. Our findings reveal that phase separation induces a remarkable alteration in the properties of weakly coupled Bose polarons. However, in the case of strong coupling, phase separation cannot destroy the highly self-trapping state of Bose polarons.

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Ning Liu. 2024-01-22. Weak and strong coupling polarons in binary Bose-Einstein condensates. https://doi.org/10.1088/1402-4896%2Fad712e

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