Collective dynamics of Fermi-Bose mixtures with an oscillating scattering length

被引：6

作者：

Abdullaev, F. Kh ^{[1
,2
]}

Ogren, M. ^{[3
,4
]}

Sorensens, M. P. ^{[5
]}

机构：

[1] Uzbek Acad Sci, Phys Tech Inst, 2-B G Mavlyanov St, Tashkent 100084, Uzbekistan

[2] Univ Fed ABC, CCNH, BR-09210170 Santo Andre, Brazil

[3] Orebro Univ, Sch Sci & Technol, S-70182 Orebro, Sweden

[4] Univ Copenhagen, Nano Sci Ctr, Dept Chem, Univ Pk 5, DK-2100 Copenhagen O, Denmark

[5] Tech Univ Denmark, Dept Appl Math & Comp Sci, DK-2800 Lyngby, Denmark

来源：

PHYSICAL REVIEW A | 2019年 / 99卷 / 03期

关键词：

GAS;

D O I：

10.1103/PhysRevA.99.033614

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Collective oscillations of superfluid mixtures of ultracold fermionic and bosonic atoms are investigated while varying the fermion-boson scattering length. We study the dynamics with respect to excited center of mass modes and breathing modes in the mixture. Parametric resonances are also analyzed when the scattering length varies periodically in time, by comparing partial differential equation models and ordinary differential equation models for the dynamics. An application to the recent experiment with fermionic Li-6 and bosonic Li-7 atoms, which approximately have the same masses, is discussed.

引用

页数：10

共 49 条

[1] Faraday waves in quasi-one-dimensional superfluid Fermi-Bose mixtures [J].

Abdullaev, F. Kh. ;

Ogren, M. ;

Sorensen, M. P. .

PHYSICAL REVIEW A, 2013, 87 (02)

[2] Superfluid Bose-Fermi mixture from weak coupling to unitarity [J].

Adhikari, S. K. ;

Salasnich, Luca .

PHYSICAL REVIEW A, 2008, 78 (04)

[3] Nonlinear Schrodinger equation for a superfluid Bose gas from weak coupling to unitarity: Study of vortices [J].

Adhikari, S. K. ;

Salasnich, L. .

PHYSICAL REVIEW A, 2008, 77 (03)

[4] Nonlinear Schrodinger equation for a superfluid Fermi gas in the BCS-BEC crossover [J].

Adhikari, S. K. .

PHYSICAL REVIEW A, 2008, 77 (04)

[5] One-dimensional superfluid Bose-Fermi mixture: Mixing, demixing, and bright solitons [J].

Adhikari, Sadhan K. ;

Salasnich, Luca .

PHYSICAL REVIEW A, 2007, 76 (02)

[6]

Andersson F., 2017, APPL COMPUT HARMON A, V46, P40

[7] A New Frequency Estimation Method for Equally and Unequally Spaced Data [J].

Andersson, Fredrik ;

Carlsson, Marcus ;

Tourneret, Jean-Yves ;

Wendt, Herwig .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2014, 62 (21) :5761-5774

[8] Equation of state and collective frequencies of a trapped Fermi gas [J].

Astrakharchik, G.E. ;

Combescot, R. ;

Leyronas, X. ;

Stringari, S. .

Physical Review Letters, 2005, 95 (03)

[9] Collective oscillations of a Bose-Fermi mixture: Effect of unequal masses of Bose and Fermi particles [J].

Banerjee, Arup .

PHYSICAL REVIEW A, 2007, 76 (02)

[10] Collective oscillations of a trapped fermi gas near the unitary limit [J].

Bulgac, A ;

Bertsch, GF .

PHYSICAL REVIEW LETTERS, 2005, 94 (07)

← 1 2 3 4 5 →