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

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

2000-07-12

arxiv.org/abs/cond-mat/0007209v2

Physics

Condensed Matter

Statistical Mechanics

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

Scientific paper

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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