Friction and Diffusion of Matter-Wave Bright Solitons

Journal Article · Fri Jan 27 00:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.030406· OSTI ID:20776966

Sinha, Subhasis; Brand, Joachim ^[1]; Cherny, Alexander Yu ^[1]; Kovrizhin, Dmitry ^[1]

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1. Max Planck Institute for the Physics of Complex Systems, Noethnitzer Strasse 38, 01187 Dresden (Germany)

We consider the motion of a matter-wave bright soliton under the influence of a cloud of thermal particles. In the ideal one-dimensional system, the scattering process of the quasiparticles with the soliton is reflectionless; however, the quasiparticles acquire a phase shift. In the realistic system of a Bose-Einstein condensate confined in a tight waveguide trap, the transverse degrees of freedom generate an extra nonlinearity in the system which gives rise to finite reflection and leads to dissipative motion of the soliton. We calculate the velocity and temperature-dependent frictional force and diffusion coefficient of a matter-wave bright soliton immersed in a thermal cloud.

• OSTI ID: 20776966
• Journal Information: Physical Review Letters, Vol. 96, Issue 3; Other Information: DOI: 10.1103/PhysRevLett.96.030406; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
DEGREES OF FREEDOM
DIFFUSION
FRICTION
MATTER
NONLINEAR PROBLEMS
ONE-DIMENSIONAL CALCULATIONS
PHASE SHIFT
REFLECTION
SCATTERING
SOLITONS
TEMPERATURE DEPENDENCE
WAVEGUIDES