Mechanism of Anomalous Tunneling in Condensed Bose System

• Kato Yusuke

  Department of Basic Science, University of Tokyo

• Nishiwaki Hiroshi

  Department of Basic Science, University of Tokyo

• Fujita Akitake

  Department of Physics, University of Tokyo

Abstract

We clarify the origin of anomalous tunneling [Kagan et al.: Phys. Rev. Lett. 90 (2003) 130402] i.e., the perfect transmission at low energy limit of tunneling of phonon excitations across the potential barrier separating two Bose condensates. The perfect transmission is a consequence of the coincidence of the wave function of the excited state at low energy limit and the macroscopic wave function of the condensate. We show that the perfect transmission at low energy occurs even at finite temperatures within the scheme of Popov approximation.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 77 (1), 013602-013602, 2008

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• BEC
• tunneling
• Gross–Pitaevskii equation
• Bogoliubov equation

Details

• CRID: 1390282679173758976
• NII Article ID: 130005436130
• NII Article ID: 110006594890
• NII Article ID: 210000107045
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.77.013602
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 9330905
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9330905
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.77.013602
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed