Generation of dark-bright soliton trains in superfluid-superfluid counterflow

Generation of dark-bright soliton trains in superfluid-superfluid counterflow

The dynamics of two penetrating superfluids exhibit an intriguing variety of nonlinear effects. Using two distinguishable components of a Bose-Einstein condensate, we investigate the counterflow of two superfluids in a narrow channel. We present the first experimental observation of trains of dark-b...

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Veröffentlicht in:Physical review letters 2011-02, Vol.106 (6), p.065302-065302, Article 065302
Hauptverfasser: Hamner, C, Chang, J J, Engels, P, Hoefer, M A
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Sprache:eng
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BOSE-EINSTEIN CONDENSATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMPUTERIZED SIMULATION
DENSITY
INSTABILITY
NONLINEAR PROBLEMS
PHYSICAL PROPERTIES
QUASI PARTICLES
SIMULATION
SOLITONS
SUPERFLUIDITY
THREE-DIMENSIONAL CALCULATIONS
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container_title Physical review letters
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creator Hamner, C
Chang, J J
Engels, P
Hoefer, M A
description The dynamics of two penetrating superfluids exhibit an intriguing variety of nonlinear effects. Using two distinguishable components of a Bose-Einstein condensate, we investigate the counterflow of two superfluids in a narrow channel. We present the first experimental observation of trains of dark-bright solitons generated by the counterflow. Our observations are theoretically interpreted by three-dimensional numerical simulations for the coupled Gross-Pitaevskii equations and the analysis of a jump in the two relatively flowing components' densities. Counterflow-induced modulational instability for this miscible system is identified as the central process in the dynamics.
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subjects BOSE-EINSTEIN CONDENSATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMPUTERIZED SIMULATION
DENSITY
INSTABILITY
NONLINEAR PROBLEMS
PHYSICAL PROPERTIES
QUASI PARTICLES
SIMULATION
SOLITONS
SUPERFLUIDITY
THREE-DIMENSIONAL CALCULATIONS
title Generation of dark-bright soliton trains in superfluid-superfluid counterflow
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