Changing α with time: Implications for fifth-force-type experiments and quintessence

Gia Dvali, Matias Zaldarriaga

    Research output: Contribution to journalArticle

    Abstract

    The time variation of fine structure constant which implies existence of a very weakly coupled ultralight scalar particle is discussed. The α-ion couples to ordinary nucleons, protons, and neutrons through the α dependence of their masses and thus mediates an isotope-dependent long-range force. The strength of the coupling is within a couple of orders of magnitude of the experimental bounds for such forces. The scalar field can play the role of a quintessence field due to a coincidence of the required time scales.

    Original languageEnglish (US)
    Pages (from-to)913031-913034
    Number of pages4
    JournalPhysical Review Letters
    Volume88
    Issue number9
    StatePublished - Mar 4 2002

    Fingerprint

    scalars
    nucleons
    isotopes
    fine structure
    neutrons
    protons
    ions

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Changing α with time : Implications for fifth-force-type experiments and quintessence. / Dvali, Gia; Zaldarriaga, Matias.

    In: Physical Review Letters, Vol. 88, No. 9, 04.03.2002, p. 913031-913034.

    Research output: Contribution to journalArticle

    Dvali, G & Zaldarriaga, M 2002, 'Changing α with time: Implications for fifth-force-type experiments and quintessence', Physical Review Letters, vol. 88, no. 9, pp. 913031-913034.
    Dvali, Gia ; Zaldarriaga, Matias. / Changing α with time : Implications for fifth-force-type experiments and quintessence. In: Physical Review Letters. 2002 ; Vol. 88, No. 9. pp. 913031-913034.
    @article{d742df3fc86545858b87ffb2b725c67b,
    title = "Changing α with time: Implications for fifth-force-type experiments and quintessence",
    abstract = "The time variation of fine structure constant which implies existence of a very weakly coupled ultralight scalar particle is discussed. The α-ion couples to ordinary nucleons, protons, and neutrons through the α dependence of their masses and thus mediates an isotope-dependent long-range force. The strength of the coupling is within a couple of orders of magnitude of the experimental bounds for such forces. The scalar field can play the role of a quintessence field due to a coincidence of the required time scales.",
    author = "Gia Dvali and Matias Zaldarriaga",
    year = "2002",
    month = "3",
    day = "4",
    language = "English (US)",
    volume = "88",
    pages = "913031--913034",
    journal = "Physical Review Letters",
    issn = "0031-9007",
    publisher = "American Physical Society",
    number = "9",

    }

    TY - JOUR

    T1 - Changing α with time

    T2 - Implications for fifth-force-type experiments and quintessence

    AU - Dvali, Gia

    AU - Zaldarriaga, Matias

    PY - 2002/3/4

    Y1 - 2002/3/4

    N2 - The time variation of fine structure constant which implies existence of a very weakly coupled ultralight scalar particle is discussed. The α-ion couples to ordinary nucleons, protons, and neutrons through the α dependence of their masses and thus mediates an isotope-dependent long-range force. The strength of the coupling is within a couple of orders of magnitude of the experimental bounds for such forces. The scalar field can play the role of a quintessence field due to a coincidence of the required time scales.

    AB - The time variation of fine structure constant which implies existence of a very weakly coupled ultralight scalar particle is discussed. The α-ion couples to ordinary nucleons, protons, and neutrons through the α dependence of their masses and thus mediates an isotope-dependent long-range force. The strength of the coupling is within a couple of orders of magnitude of the experimental bounds for such forces. The scalar field can play the role of a quintessence field due to a coincidence of the required time scales.

    UR - http://www.scopus.com/inward/record.url?scp=0037018088&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0037018088&partnerID=8YFLogxK

    M3 - Article

    VL - 88

    SP - 913031

    EP - 913034

    JO - Physical Review Letters

    JF - Physical Review Letters

    SN - 0031-9007

    IS - 9

    ER -