Work

Macroscopic Dynamics of a Trapped Bose-Einstein Condensate in the Presence of 1D and 2D Optical Lattices

Year: 2002

Type: article

Abstract: The hydrodynamic equations of superfluids for a weakly interacting Bose gas are generalized to include the effects of periodic optical potentials produced by stationary laser beams. The new equations are characterized by a renormalized interaction coupling constant and by an effective mass accounting for the inertia of the system along the laser direction. For large laser intensities the effective mass is directly related to the tunneling rate between two consecutive wells. The predictions for the frequencies of the collective modes of a condensate confined by a magnetic harmonic trap are discussed for both 1D and 2D optical lattices and compared with recent experimental data.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.88.180404

Authors: M. Krämer, L. Pitaevskii, S. Stringari

Institutions: University of Trento, Istituto Nazionale per la Fisica della Materia, P.L. Kapitza Institute for Physical Problems

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2073327650

FWCI: 12.31

Cites: 13

Cited by: 133

Related to: 10