Casimir effect for a Bose-Einstein condensate inside a cylindrical tube
Casimir effect for a Bose-Einstein condensate inside a cylindrical tube
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Date
2015-11-24
Authors
Biswas, Shyamal
Bhattacharyya, Saugata
Agarwal, Amit
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Abstract
We explore the Casimir effect on an interacting Bose-Einstein condensate (BEC) inside a cylindrical tube. The Casimir force for the confined BEC consists of (i) a mean-field part arising from the spatial inhomogeneity of the condensate order parameter, and (ii) a quantum fluctuation part arising from the confinement of Bogoliubov excitations in the condensate. Our analytical result predicts Casimir force on a cylindrical shallow of 4He well below the λ-point, and can be tested experimentally.
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Keywords
Bogoliubov excitations,
BoseEinstein condensate,
Casimir effect,
cylindrical geometry
Citation
Journal of Physics B: Atomic, Molecular and Optical Physics. v.49(1)