Beyond-mean-field description of a trapped unitary Fermi gas with mass and population imbalance

Year: 2021

Authors: Pini M.; Pieri P.; Grimm R.; Strinati G.C.

Autors Affiliation: Univ Camerino, Sch Sci & Technol, Phys Div, I-62032 Camerino, MC, Italy; Univ Bologna, Dipartimento Fis & Astron, I-40127 Bologna, BO, Italy; Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, BO, Italy; Univ Innsbruck, Inst Expt Phys, A-6020 Innsbruck, Austria; Austrian Acad Sci, Inst Quantenopt & Quanteninformat IQOQI, A-6020 Innsbruck, Austria; Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, PG, Italy; CNR, Ist Nazl Ott, Sede Firenze, INO, I-50125 Florence, FI, Italy.

Abstract: A detailed description is given of the phase diagram for a two-component unitary Fermi gas with mass and population imbalance, for both homogeneous and trapped systems. This aims at providing quantitative benchmarks for the normal-to-superfluid phase transition of a mass-imbalanced Fermi gas in the temperature-polarization parameter space. A self-consistent t-matrix approach is adopted, which has already proven to accurately describe the thermodynamic properties of the mass- and population-balanced unitary Fermi gas. Our results provide a guideline for the ongoing experiments on heteronuclear Fermi mixtures.

Journal/Review: PHYSICAL REVIEW A

Volume: 103 (2)      Pages from: 023314-1  to: 023314-10

KeyWords: Fermionic condensates
DOI: 10.1103/PhysRevA.103.023314

Citations: 13
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