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Weakly-Interacting Bose-Bose Mixtures from the Functional Renormalisation Group
Version 1
: Received: 14 December 2021 / Approved: 15 December 2021 / Online: 15 December 2021 (16:56:18 CET)
A peer-reviewed article of this Preprint also exists.
Isaule, F.; Morera, I. Weakly-Interacting Bose–Bose Mixtures from the Functional Renormalisation Group. Condens. Matter 2022, 7, 9. Isaule, F.; Morera, I. Weakly-Interacting Bose–Bose Mixtures from the Functional Renormalisation Group. Condens. Matter 2022, 7, 9.
Abstract
We provide a detailed presentation of the functional renormalisation group (FRG) approach to weakly-interacting Bose-Bose mixtures, including a complete discussion on the RG equations. To test this approach, we examine thermodynamic properties of balanced three-dimensional Bose-Bose gases at zero and finite temperatures and find a good agreement with related works. We also study ground-state energies of repulsive Bose polarons by examining mixtures in the limit of infinite population imbalance. Finally, we discuss future applications of the FRG to novel problems in Bose-Bose mixtures and related systems.
Keywords
quantum gases; bose-bose mixtures; bose polarons; renormalisation group
Subject
Physical Sciences, Atomic and Molecular Physics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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