Elementary excitations of condensates in a Kronig-Penney potential

I. Danshita, S. Kurihara, S. Tsuchiya

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We investigate the excitation spectrum of a Bose-Einstein condensate in a Kronig-Penney potential. We solve the Bogoliubov equations analytically and obtain the band structure of the excitation spectrum. We find that the excitation spectrum is gapless and linear at low energies. This property is found to be attributed to the anomalous tunneling behavior of low energy excitations, which has been predicted by Kagan et al.

    Original languageEnglish
    Title of host publicationAIP Conference Proceedings
    Pages41-42
    Number of pages2
    Volume850
    DOIs
    Publication statusPublished - 2006
    EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
    Duration: 2006 Aug 102006 Oct 17

    Other

    OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
    CountryUnited States
    CityOrlando, FL
    Period06/8/1006/10/17

      Fingerprint

    Keywords

    • Bose-Einstein condensation
    • Elementary excitation
    • Kronig-Penney model
    • Optical lattice

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Danshita, I., Kurihara, S., & Tsuchiya, S. (2006). Elementary excitations of condensates in a Kronig-Penney potential. In AIP Conference Proceedings (Vol. 850, pp. 41-42) https://doi.org/10.1063/1.2354597