Condensed Matter Theory
Andre Eckardt et.al.: AC-induced superfluidity
- Author(s): Andre Eckardt, Martin Holthaus
- Title: AC-induced superfluidity
- Date of Upload: 2007-10-30
- Article: EPL 80, 50004 (2007), Europhysics Letters
- Keywords:
- PACS: 03.75.Lm, 03.75.Kk
- Abstract:
- We argue that a system of ultracold bosonic atoms in a tilted optical lattice can become superfluid in response to resonant AC forcing. Among others, this allows one to prepare a Bose-Einstein condensate in a state associated with a negative effective mass. Our reasoning is backed by both exact numerical simulations for systems consisting of few particles, and by a theoretical approach based on Floquet-Fock states.
- Rights-Statement
- URL: http://arxiv.org/abs/0709.0605v2 (application/pdf)
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