Collective excitation frequencies of a Bose - Einstein condensate with electromagnetically induced 1/r attraction

2000/07/12 by I. E. Mazets, Mazets, I. E.
Physics and Astronomy · #FOS: Physical sciences #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.stat-mech

paper · pdf · doi:10.48550/arxiv.cond-mat/0007209

5 pages, Latex. The boundary conditions for the l=0 mode improved. The values of eigenfrequencies for the l=0 and l=2 modes corrected. The final sentences corrected

arxiv created 2000/08/24 · arxiv updated 2009/11/30

Abstract

We investigate collective excitations of an atomic Bose-Einstein condensate in a recently discovered regime [D.O'Dell et al., Phys. Rev. Lett. 84, 5687 (2000)] of a balance between electromagnetically induced 1/r attraction and a short-range interatomic repulsion. The corresponding frequencies for monopole, dipole, and quadrupole modes are calculated numerically in the zero temperature case.

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