Abstract
We provide a detailed presentation of the functional renormalisation group (FRG) approach for 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.
Funder
Engineering and Physical Sciences Research Council
MICINN
Secretaria d’Universitats i Recerca del Departament d’Empresa462i Coneixement de la Generalitat de Catalunya
Ministry of Economy, Industry and Competitiveness
Subject
Condensed Matter Physics,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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