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Title: Functional renormalization for repulsive Bose-Bose mixtures at zero temperature
Author: Isaule, Felipe
Morera Navarro, Ivan
Polls Martí, Artur
Juliá-Díaz, Bruno
Keywords: Renormalització (Física)
Renormalization (Physics)
Issue Date: 25-Jan-2021
Publisher: American Physical Society
Abstract: We study weakly-repulsive Bose-Bose mixtures in two and three dimensions at zero temperature using the functional renormalization group (FRG). We examine the RG flows and the role of density and spin fluctuations. We study the condition for phase separation and find that this occurs at the mean-field point within the range of parameters explored. Finally, we examine the energy per particle and condensation depletion. We obtain that our FRG calculations compare favorably with known results from perturbative approaches for macroscopic properties.
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It is part of: Physical Review A, 2021, vol. 103, p. 1-14
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ISSN: 2469-9926
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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