Faraday waves in Bose-Einstein condensates with engineering three-body interactions

被引：10

作者：

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

Gammal, A. ^{[3
]}

Tomio, Lauro ^{[2
,4
]}

机构：

[1] Int Islamic Univ Malaysia, Fac Sci, Dept Phys, Jln Sultan Ahmad Shah, Kuantan 25200, Malaysia

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

[3] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, Brazil

[4] UNESP Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, Brazil

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2016年 / 49卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

Bose-Einstein condensate; Faraday waves; dynamic properties of condensates; BEC in periodic nonlinear potentials; MODULATIONAL INSTABILITY; FESHBACH RESONANCES;

D O I：

10.1088/0953-4075/49/2/025302

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We consider Bose-Einstein condensates with two-and three-body interactions periodically varying in time. Two models of time-dependent three-body interactions, with quadratic and quartic dependence on the two-body atomic scattering length a(s), are studied. It is shown that parametric instabilities in the condensate lead to the generation of Faraday waves (FWs), with wavelengths depending on the background scattering length, as well as on the frequency and amplitude of the modulations of a(s). From an experimental perspective, this opens a new possibility to tune the period of Faraday patterns by varying not only the frequency of modulations and background scattering length, but also the amplitude of the modulations. The latter effect can be used to estimate the parameters of three-body interactions from the FW experimental results. Theoretical predictions are confirmed by numerical simulations of the corresponding extended Gross-Pitaevskii equation.

引用

页数：12

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