Absence of Anomalous Tunneling of Bogoliubov Excitations for Arbitrary Potential Barrier under the Critical Condensate Current
-
- Takahashi Daisuke
- Department of Basic Science, University of Tokyo
-
- Kato Yusuke
- Department of Basic Science, University of Tokyo
Search this article
Abstract
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.
Journal
-
- Journal of the Physical Society of Japan
-
Journal of the Physical Society of Japan 78 (2), 023001-023001, 2009
THE PHYSICAL SOCIETY OF JAPAN
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390282679173488128
-
- NII Article ID
- 130005437349
- 110007097901
- 210000107644
-
- NII Book ID
- AA00704814
-
- ISSN
- 13474073
- 00319015
-
- NDL BIB ID
- 9799867
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed