Oblique dark solitons in supersonic flow of a Bose-Einstein condensate

被引：86

作者：

El, G. A. ^{[1
]}

Gammal, A.

Kamchatnov, A. M.

机构：

[1] Univ Loughborough, Dept Math Sci, Loughborough LE11 3TU, Leics, England

[2] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

[3] Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 18期

基金：

英国工程与自然科学研究理事会;

关键词：

Computer simulation - Gas condensates - Nonlinear equations - Supersonic flow;

D O I：

10.1103/PhysRevLett.97.180405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the framework of the Gross-Pitaevskii mean field approach, it is shown that the supersonic flow of a Bose-Einstein condensate can support a new type of pattern-an oblique dark soliton. The corresponding exact solution of the Gross-Pitaevskii equation is obtained. It is demonstrated by numerical simulations that oblique solitons can be generated by an obstacle inserted into the flow.

引用

页数：4

共 13 条

[1] Motion of a heavy impurity through a Bose-Einstein condensate [J].

Astrakharchik, GE ;

Pitaevskii, LP .

PHYSICAL REVIEW A, 2004, 70 (01) :013608-1

[2]

CORNELL EA, 2005, P C NONL WAV INT SYS

[3] Formation of shock waves in a Bose-Einstein condensate [J].

Damski, B .

PHYSICAL REVIEW A, 2004, 69 (04) :043610-1

[4] Spatial dispersive shock waves generated in supersonic flow of Bose-Einstein condensate past slender body (vol 350, pg 192, 2006) [J].

El, GA ;

Kamchatnov, AM .

PHYSICS LETTERS A, 2006, 352 (06) :554-555

[5] Spatial dispersive shock waves generated in supersonic flow of Bose-Einstein condensate past slender body [J].

El, GA ;

Kamchatnov, AM .

PHYSICS LETTERS A, 2006, 350 (3-4) :192-196

[6]

Gurevich A. V., 1995, Journal of Experimental and Theoretical Physics, V81, P87

[7]

GUREVICH A. V., 1996, SOV PHYS JETP, V82, P709

[8] Dispersive and classical shock waves in Bose-Einstein condensates and gas dynamics [J].

Hoefer, M. A. ;

Ablowitz, M. J. ;

Coddington, I. ;

Cornell, E. A. ;

Engels, P. ;

Schweikhard, V. .

PHYSICAL REVIEW A, 2006, 74 (02)

[9] Dissipationless shock waves in Bose-Einstein condensates with repulsive interaction between atoms [J].

Kamchatnov, AM ;

Gammal, A ;

Kraenkel, RA .

PHYSICAL REVIEW A, 2004, 69 (06) :063605-1

[10] Expansion of Bose-Einstein condensates confined in quasi-one-dimensional or quasi-two-dimensional traps [J].

Kamchatnov, AM .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2004, 98 (05) :908-917

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