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ID 34226
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Author
Ghosh, Tarun Kanti
Machida, Kazushige
Abstract
We study properties of excited states of an elongated Fermi superfluid along the Bose-Einstein-condensate-BCS crossover including the unitarity limit. Analytic expressions for the sound velocity in an inhomogeneous as well as homogeneous Fermi superfluid along the crossover are obtained on the basis of the hydrodynamic theory. The complete excitation spectrum of axial quasiparticles with various discrete radial nodes is presented. We discuss the feasibility of measuring the sound velocity and the multibranch Bogoliubov spectrum experimentally.
Keywords
bose-einstein condensate
gas
propagation
resonance
Note
Digital Object Identifer:10.1103/PhysRevA.73.013613
Published with permission from the copyright holder. This is the institute's copy, as published in Physical Review A, January 2006, Volume 73, Issue 1, Pages 6.
Publisher URL:http://dx.doi.org/10.1103/PhysRevA.73.013613
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Copyright © 2006 The American Physical Society. All rights reserved.
Published Date
2006-1
Publication Title
Physical Review A
Volume
volume73
Issue
issue1
Content Type
Journal Article
language
英語
Refereed
True
DOI
Web of Science KeyUT
Submission Path
light_and_optics/4