Interacting bosons in a nearly resonant potential well

Joseph P. Straley, Eugene B. Kolomeisky

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We establish that the ability of a localized trapping potential to bind weakly interacting bosons is dramatically enhanced in the vicinity of the threshold of formation of the single-particle bound state of the trap. Specifically, for repulsive particles and a superthreshold trapping potential the equilibrium number of bound bosons and the size of the ground state diverge upon approaching the single-particle threshold from above. For attractive interactions and a subthreshold trap, a collective bound state always forms for a sufficiently large number of bosons, despite the inability of interparticle attraction alone to form a two-body bound state.

Original languageEnglish
Article number063421
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number6
StatePublished - Jun 25 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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