Ground-state properties and collective excitations in a 2D Bose-Einstein condensate with gravity-like interatomic attraction

2008-02-01
Keleş, Ahmet
Tanatar, B.
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We study the ground-state properties of a Bose-Einstein condensate (BEC) with the short-range repulsion and gravitylike 1/r interatomic attraction in two-dimensions (2D). Using the variational approach, we obtain the ground-state energy and show that the condensate is stable for all interaction strenghts in 2D. We also determine the collective excitations at zero temperature using the time-dependent variational method. We analyze the properties of the Thomas-Fermi-gravity (TF-G) and gravity (G) regimes.
General Materials Science, Atomic and Molecular Physics, and Optics, Condensed Matter Physics
https://hdl.handle.net/11511/36729
JOURNAL OF LOW TEMPERATURE PHYSICS
Department of Physics, Article

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Citation Formats
A. Keleş and B. Tanatar, “Ground-state properties and collective excitations in a 2D Bose-Einstein condensate with gravity-like interatomic attraction,” JOURNAL OF LOW TEMPERATURE PHYSICS, pp. 630–635, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36729.
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