Suppression of Unitary Three-Body Loss in a Degenerate Bose-Fermi Mixture

被引：16

作者：

Chen, Xing-Yan ^{[1
,2
]}

Duda, Marcel ^{[1
,2
]}

Schindewolf, Andreas ^{[1
,2
]}

Bause, Roman ^{[1
,2
]}

Bloch, Immanuel ^{[1
,2
,3
]}

Luo, Xin-Yu ^{[1
,2
]}

机构：

[1] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[2] Munich Ctr Quantum Sci & Technol, D-80799 Munich, Germany

[3] Ludwig Maximilians Univ Munchen, Fak Phys, D-80799 Munich, Germany

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 15期

关键词：

ATOMS;

D O I：

10.1103/PhysRevLett.128.153401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study three-body loss in an ultracold mixture of a thermal Bose gas and a degenerate Fermi gas. We find that at unitarity, where the interspecies scattering length diverges, the usual inverse-square temperature scaling of the three-body loss found in nondegenerate systems is strongly modified and reduced with the increasing degeneracy of the Fermi gas. While the reduction of loss is qualitatively explained within the few-body scattering framework, a remaining suppression provides evidence for the long-range Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions mediated by fermions between bosons. Our model based on RKKY interactions quantitatively reproduces the data without free parameters, and predicts one order of magnitude reduction of the three-body loss coefficient in the deeply Fermi-degenerate regime.

引用

页数：6

共 57 条

[1]

aps.org, US, DOI [10.1103/PhysRevLett.128.153401, DOI 10.1103/PHYSREVLETT.128.153401]

[2] Three-body bound states of two bosonic impurities immersed in a Fermi sea in 2D [J].

Bellotti, F. F. ;

Frederico, T. ;

Yamashita, M. T. ;

Fedorov, D. V. ;

Jensen, A. S. ;

Zinner, N. T. .

NEW JOURNAL OF PHYSICS, 2016, 18

[3] Quantum Monte Carlo Study of a Resonant Bose-Fermi Mixture [J].

Bertaina, G. ;

Fratini, E. ;

Giorgini, S. ;

Pieri, P. .

PHYSICAL REVIEW LETTERS, 2013, 110 (11)

[4] Tests of Universal Three-Body Physics in an Ultracold Bose-Fermi Mixture [J].

Bloom, Ruth S. ;

Hu, Ming-Guang ;

Cumby, Tyler D. ;

Jin, Deborah S. .

PHYSICAL REVIEW LETTERS, 2013, 111 (10)

[5] Generalized mean-field approach to a resonant Bose-Fermi mixture [J].

Bortolotti, D. C. E. ;

Avdeenkov, A. V. ;

Bohn, J. L. .

PHYSICAL REVIEW A, 2008, 78 (06)

[6] Supersolid versus phase separation in atomic Bose-Fermi mixtures -: art. no. 130404 [J].

Büchler, HP ;

Blatter, G .

PHYSICAL REVIEW LETTERS, 2003, 91 (13)

[7] Coherence, correlations, and collisions: What one learns about Bose-Einstein condensates from their decay [J].

Burt, EA ;

Ghrist, RW ;

Myatt, CJ ;

Holland, MJ ;

Cornell, EA ;

Wieman, CE .

PHYSICAL REVIEW LETTERS, 1997, 79 (03) :337-340

[8] Radio-frequency transitions on weakly bound ultracold molecules [J].

Chin, C ;

Julienne, PS .

PHYSICAL REVIEW A, 2005, 71 (01)

[9] Superconductivity and other collective phenomena in a hybrid Bose-Fermi mixture formed by a polariton condensate and an electron system in two dimensions [J].

Cotlet, Ovidiu ;

Zeytinoglu, Sina ;

Sigrist, Manfred ;

Demler, Eugene ;

Imamoglu, Atac .

PHYSICAL REVIEW B, 2016, 93 (05)

[10] Limits on universality in ultracold three-boson recombination [J].

D'Incao, JP ;

Suno, H ;

Esry, BD .

PHYSICAL REVIEW LETTERS, 2004, 93 (12) :123201-1

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