Dynamics of condensate shells: Collective modes and expansion

C. Lannert, T. C. Wei, S. Vishveshwara

Research output: Contribution to journalArticlepeer-review


We explore the physics of three-dimensional shell-shaped condensates, relevant to cold atoms in "bubble traps." We study the ground state of the condensate wave function, spherically symmetric collective modes, and expansion properties of such a shell using a combination of analytical and numerical techniques. We find two breathing-type modes with frequencies that are distinct from that of the filled spherical condensate. Upon trap release and subsequent expansion, we find that the system displays self-interference fringes. We estimate characteristic time scales, degree of mass accumulation, three-body loss, and kinetic energy release during expansion for a typical system of Rb87.

Original languageEnglish (US)
Article number013611
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number1
StatePublished - 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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