Modulation instability and solitary wave formation in two-component Bose-Einstein condensates

Details Modulation instability and solitary wave formation in two-component Bose-Einstein condensates Modulation instability and solitary wave formation in two-component Bose-Einstein condensates

2006-03-31

arxiv.org/abs/cond-mat/0603838v2

Phys. Rev. A 74, 013617 (2006)

Physics

Condensed Matter

Other Condensed Matter

15 pages, 10 figures

Scientific paper

10.1103/PhysRevA.74.013617

We investigate nonlinear dynamics induced by the modulation instability of a two-component mixture in an atomic Bose-Einstein condensate. The nonlinear dynamics is examined using numerical simulations of the time-dependent coupled Gross-Pitaevskii equations. The unstable modulation grows from initially miscible condensates into various types of vector solitary waves, depending on the combinations of the sign of the coupling constants (intracomponent and intercomponent). We discuss the detailed features of the modulation instability, dynamics of solitary wave formation, and an analogy with the collapsing dynamics in a single-component condensate with attractive interactions.

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