Impurity in a three-dimensional unitary Bose gas

O. Hryhorchak; G. Panochko; V. Pastukhov

doi:10.1016/j.physleta.2020.126934

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arXiv · 2006.06188

Impurity in a three-dimensional unitary Bose gas

O. Hryhorchak·G. Panochko·V. Pastukhov

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Abstract

By using simple and efficient method we discuss properties of a single impurity immersed in three-dimensional Bose gas with the interaction between particles tuned to unitary limit. Particularly, adopting the mean-field-like approximation we present the first estimations for the low-momentum parameters of the impurity spectrum, namely, the binding energy, the effective mass and the quasiparticle residue both for repulsive and attractive Bose polarons in the unitary gas.

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O. Hryhorchak, G. Panochko, V. Pastukhov. 2020-06-11. Impurity in a three-dimensional unitary Bose gas. https://doi.org/10.1016/j.physleta.2020.126934

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