Effect of scattering lengths on the dynamics of a two-component Bose-Einstein condensate

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.063608· OSTI ID:21528931

Csire, Gabor ^[1]; Schumayer, Daniel ^[2]; Apagyi, Barnabas ^[1]

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1. Institute of Physics, Budapest University of Technology and Economics, Budafoki ut 8, Budapest H-1111 (Hungary)
2. Jack Dodd Centre for Quantum Technology, Department of Physics, University of Otago, 730 Cumberland St., Dunedin 9016 (New Zealand)

We examine the effect of the intra- and interspecies scattering lengths on the dynamics of a two-component Bose-Einstein condensate, particularly focusing on the existence and stability of solitonic excitations. For each type of possible soliton pairs, stability ranges are presented in tabulated form. We also compare the numerically established stability of bright-bright, bright-dark, and dark-dark solitons with our analytical prediction and with that of Painleve analysis of the dynamical equation. We demonstrate that tuning the interspecies scattering length away from the predicted value (keeping the intraspecies coupling fixed) breaks the stability of the soliton pairs.

• OSTI ID: 21528931
• Journal Information: Physical Review. A, Vol. 82, Issue 6; Other Information: DOI: 10.1103/PhysRevA.82.063608; (c) 2010 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ANALYTIC FUNCTIONS
BOSE-EINSTEIN CONDENSATION
COMPARATIVE EVALUATIONS
COUPLING
EXCITATION
SCATTERING LENGTHS
SOLITONS
STABILITY
TUNING
DIMENSIONS
ENERGY-LEVEL TRANSITIONS
EVALUATION
FUNCTIONS
LENGTH
QUASI PARTICLES