Time-dependent multi-orbital mean-field for fragmented Bose-Einstein condensates

Ofir E. Alon, Alexej I. Streltsov, Lorenz S. Cederbaum

Research output: Contribution to journalArticlepeer-review


The evolution of Bose-Einstein condensates is usually described by the famous time-dependent Gross-Pitaevskii equation, which assumes all bosons to reside in a single time-dependent orbital. In the present work we address the evolution of fragmented condensates, for which two (or more) orbitals are occupied, and derive a corresponding time-dependent multi-orbital mean-field theory. We call our theory TDMF(n), where n stands for the number of evolving fragments. Working equations for a general two-body interaction between the bosons are explicitly presented along with an illustrative numerical example.

Original languageEnglish
Pages (from-to)453-459
Number of pages7
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number5-6
StatePublished - 12 Mar 2007
Externally publishedYes


  • Fragmented condensates
  • Multi-orbital mean-field
  • Time-evolution

ASJC Scopus subject areas

  • Physics and Astronomy (all)


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