論文

査読有り 筆頭著者 責任著者
2009年2月

Absence of Anomalous Tunneling of Bogoliubov Excitations for Arbitrary Potential Barrier under the Critical Condensate Current

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
  • Daisuke Takahashi
  • ,
  • Yusuke Kato

78
2
開始ページ
023001
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1143/JPSJ.78.023001
出版者・発行元
PHYSICAL SOC JAPAN

We derive the exact solution of low energy limit of Bogoliubov equations for excitations of Bose-Einstein condensate in the presence of arbitrary potential barrier and maximum current of condensate. Using this solution, we give the explicit expression for the transmission coefficient against the potential barrier, which shows partial transmission in the low energy limit. The wavefunctions of excitations in the low energy limit do not coincide with that of the condensate. The absence of the perfect transmission in the critical current state originates from local enhancement of density fluctuations around the potential barrier.

リンク情報
DOI
https://doi.org/10.1143/JPSJ.78.023001
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000263575100001&DestApp=WOS_CPL
URL
http://orcid.org/0000-0002-7369-3640
ID情報
  • DOI : 10.1143/JPSJ.78.023001
  • ISSN : 0031-9015
  • ORCIDのPut Code : 33229121
  • Web of Science ID : WOS:000263575100001

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