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ID 34226
フルテキストURL
著者
Ghosh, Tarun Kanti Okayama University
Machida, Kazushige Okayama University
抄録
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.
キーワード
bose-einstein condensate
gas
propagation
resonance
備考
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
Direct access to Thomson Web of Science record
Copyright © 2006 The American Physical Society. All rights reserved.
発行日
2006-1
出版物タイトル
Physical Review A
73巻
1号
資料タイプ
学術雑誌論文
言語
English
査読
有り
DOI
Web of Sience KeyUT
Submission Path
light_and_optics/4