Superfluid and Dissipative Dynamics of a Bose-Einstein Condensate in a Periodic Optical Potential

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We create Bose-Einstein condensates of 87-rubidium in a static magnetic trap with a superimposed blue-detuned 1D optical lattice. By displacing the magnetic trap center we are able to control the condensate evolution. We observe a change in the frequency of the center-of-mass oscillation in the harmonic trapping potential, in analogy with an increase in effective mass. For fluid velocities greater than a local speed of sound, we observe the onset of dissipative processes up to full removal of the superfluid component. A parallel simulation study visualizes the dynamics of the BEC and accounts for the main features of the observed behavior.
4 pages, including figures

Keywords

Condensed Matter

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/231498

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0102076
 http://arxiv.org/abs/cond-mat/0102076
 Phys. Rev. Lett. 86, 4447 (2001).
 doi:10.1103/PhysRevLett.86.4447

Collections

arXiv