Condensed phase of Bose-Fermi mixtures with a pairing interaction

被引：19

作者：

Guidini, Andrea ^{[1
]}

Bertaina, Gianluca ^{[2
]}

Galli, Davide Emilio ^{[2
]}

Pieri, Pierbiagio ^{[1
]}

机构：

[1] Univ Camerino, Sch Sci & Technol, Div Phys, I-62032 Camerino, Italy

[2] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

来源：

PHYSICAL REVIEW A | 2015年 / 91卷 / 02期

关键词：

EINSTEIN CONDENSATION; MOLECULES; SUPERCONDUCTIVITY; DENSITY; STATE; BCS;

D O I：

10.1103/PhysRevA.91.023603

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the condensed phase of a Bose-Fermi mixture with a tunable pairing interaction between bosons and fermions with many-body diagrammatic methods and fixed-node diffusion quantum Monte Carlo simulations. A universal behavior of the condensate fraction and bosonic momentum distribution with respect to the boson concentration is found to hold in an extended range of boson-fermion couplings and concentrations. For vanishing boson density, we prove that the bosonic condensate fraction reduces to the quasiparticle weight Z of the Fermi polaron studied in the context of polarized Fermi gases, unifying in this way two apparently unrelated quantities.

引用

页数：5

共 56 条

[51] Bose-Fermi pair correlations in attractively interacting Bose-Fermi atomic mixtures [J].

Watanabe, Takayuki ;

Suzuki, Toru ;

Schuck, Peter .

PHYSICAL REVIEW A, 2008, 78 (03)

[52] Ultracold Fermionic Feshbach Molecules of 23Na40K [J].

Wu, Cheng-Hsun ;

Park, Jee Woo ;

Ahmadi, Peyman ;

Will, Sebastian ;

Zwierlein, Martin W. .

PHYSICAL REVIEW LETTERS, 2012, 109 (08)

[53] Strongly interacting isotopic Bose-Fermi mixture immersed in a Fermi sea [J].

Wu, Cheng-Hsun ;

Santiago, Ibon ;

Park, Jee Woo ;

Ahmadi, Peyman ;

Zwierlein, Martin W. .

PHYSICAL REVIEW A, 2011, 84 (01)

[54] Quantum Monte Carlo simulation of three-dimensional Bose-Fermi mixtures [J].

Yamamoto, Arata ;

Hatsuda, Tetsuo .

PHYSICAL REVIEW A, 2012, 86 (04)

[55] Stability condition of a strongly interacting boson-fermion mixture across an interspecies Feshbach resonance [J].

Yu, Zeng-Qiang ;

Zhang, Shizhong ;

Zhai, Hui .

PHYSICAL REVIEW A, 2011, 83 (04)

[56] Collisional stability of fermionic Feshbach molecules [J].

Zirbel, J. J. ;

Ni, K. -K. ;

Ospelkaus, S. ;

D'Incao, J. P. ;

Wieman, C. E. ;

Ye, J. ;

Jin, D. S. .

PHYSICAL REVIEW LETTERS, 2008, 100 (14)

← 1 2 3 4 5 6 →