Document Type

Article

Publication Date

1-25-2007

Publication Title

Physical Review A - Atomic, Molecular, and Optical Physics

Abstract

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.

Volume

75

Issue

1

DOI

10.1103/PhysRevA.75.013611

ISSN

10502947

Rights

© 2007 The American Physical Society.

Comments

Archived as published.

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