Exact decay and tunnelling dynamics of interacting few-boson systems

Axel U.J. Lode, Alexej I. Streltsov, Ofir E. Alon, Hans Dieter Meyer, Lorenz S. Cederbaum

Research output: Contribution to journalArticlepeer-review


The decay and tunnelling dynamics of repulsive few-boson systems through a one-dimensional potential barrier is studied from first principles. To this end, we solve the numerically exact time-dependent few-boson Schrödinger equation by utilizing the successful multiconfiguration time-dependent Hartree method. Benchmark results for a wide range of interactions are reported. Deviations from the time-dependent Gross-Pitaevskii approach are identified. Counterintuitively, the mean-field approach can overestimate the tunnelling times even for relatively weakly-interacting few-boson systems. Implications are discussed.

Original languageEnglish
Article number044018
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number4
StatePublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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