Collective excitations of Bose-Einstein condensates in a double-well potential

Ippei Danshita, Kyota Egawa, Nobuhiko Yokoshi, Susumu Kurihara

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    We investigate collective excitations of Bose-Einstein condensates at absolute zero in a double-well trap. We solve the Bogoliubov equations with a double-well trap, and show that the crossover from the dipole mode to the Josephson plasma mode occurs in the lowest energy excitation. It is found that the anomalous tunneling property of low energy excitations is crucial to the crossover.

    Original languageEnglish
    Pages (from-to)3179-3185
    Number of pages7
    JournalJournal of the Physical Society of Japan
    Volume74
    Issue number12
    DOIs
    Publication statusPublished - 2005 Dec

    Fingerprint

    Bose-Einstein condensates
    crossovers
    traps
    excitation
    absolute zero
    dipoles
    energy

    Keywords

    • Anomalous tunneling
    • Bogoliubov excitation
    • Bose-Einstein condensate
    • Double-well trap
    • Josephson effect

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Collective excitations of Bose-Einstein condensates in a double-well potential. / Danshita, Ippei; Egawa, Kyota; Yokoshi, Nobuhiko; Kurihara, Susumu.

    In: Journal of the Physical Society of Japan, Vol. 74, No. 12, 12.2005, p. 3179-3185.

    Research output: Contribution to journalArticle

    Danshita, Ippei ; Egawa, Kyota ; Yokoshi, Nobuhiko ; Kurihara, Susumu. / Collective excitations of Bose-Einstein condensates in a double-well potential. In: Journal of the Physical Society of Japan. 2005 ; Vol. 74, No. 12. pp. 3179-3185.
    @article{6ce83004f0204ea29bd4a90586f9c2d8,
    title = "Collective excitations of Bose-Einstein condensates in a double-well potential",
    abstract = "We investigate collective excitations of Bose-Einstein condensates at absolute zero in a double-well trap. We solve the Bogoliubov equations with a double-well trap, and show that the crossover from the dipole mode to the Josephson plasma mode occurs in the lowest energy excitation. It is found that the anomalous tunneling property of low energy excitations is crucial to the crossover.",
    keywords = "Anomalous tunneling, Bogoliubov excitation, Bose-Einstein condensate, Double-well trap, Josephson effect",
    author = "Ippei Danshita and Kyota Egawa and Nobuhiko Yokoshi and Susumu Kurihara",
    year = "2005",
    month = "12",
    doi = "10.1143/JPSJ.74.3179",
    language = "English",
    volume = "74",
    pages = "3179--3185",
    journal = "Journal of the Physical Society of Japan",
    issn = "0031-9015",
    publisher = "Physical Society of Japan",
    number = "12",

    }

    TY - JOUR

    T1 - Collective excitations of Bose-Einstein condensates in a double-well potential

    AU - Danshita, Ippei

    AU - Egawa, Kyota

    AU - Yokoshi, Nobuhiko

    AU - Kurihara, Susumu

    PY - 2005/12

    Y1 - 2005/12

    N2 - We investigate collective excitations of Bose-Einstein condensates at absolute zero in a double-well trap. We solve the Bogoliubov equations with a double-well trap, and show that the crossover from the dipole mode to the Josephson plasma mode occurs in the lowest energy excitation. It is found that the anomalous tunneling property of low energy excitations is crucial to the crossover.

    AB - We investigate collective excitations of Bose-Einstein condensates at absolute zero in a double-well trap. We solve the Bogoliubov equations with a double-well trap, and show that the crossover from the dipole mode to the Josephson plasma mode occurs in the lowest energy excitation. It is found that the anomalous tunneling property of low energy excitations is crucial to the crossover.

    KW - Anomalous tunneling

    KW - Bogoliubov excitation

    KW - Bose-Einstein condensate

    KW - Double-well trap

    KW - Josephson effect

    UR - http://www.scopus.com/inward/record.url?scp=29244444208&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=29244444208&partnerID=8YFLogxK

    U2 - 10.1143/JPSJ.74.3179

    DO - 10.1143/JPSJ.74.3179

    M3 - Article

    AN - SCOPUS:29244444208

    VL - 74

    SP - 3179

    EP - 3185

    JO - Journal of the Physical Society of Japan

    JF - Journal of the Physical Society of Japan

    SN - 0031-9015

    IS - 12

    ER -