Modulational instability criteria for two-component Bose-Einstein condensates

I. Kourakis, P. K. Shukla, M. Marklund, L. Stenflo

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


The stability of colliding Bose-Einstein condensates is investigated. A set of coupled Gross-Pitaevskii equations is thus considered, and analyzed via a perturbative approach. No assumption is made on the signs (or magnitudes) of the relevant parameters like the scattering lengths and the coupling coefficients. The formalism is therefore valid for asymmetric as well as symmetric coupled condensate wave states. A new set of explicit criteria is derived and analyzed. An extended instability region, in addition to an enhanced instability growth rate, is predicted for unstable two component bosons, as compared to the individual (uncoupled) state.

Original languageBritish English
Pages (from-to)381-384
Number of pages4
JournalEuropean Physical Journal B
Issue number3
StatePublished - Aug 2005


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