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    Phase transitions and gluodynamics in 2-colour matter at high density


    Boz, Tamer and Cotter, Seamus and Fister, Leonard and Mehta, Dhagash and Skullerud, Jon-Ivar (2013) Phase transitions and gluodynamics in 2-colour matter at high density. European Physical Journal a: Hadrons and Nuclei , 49 (87). pp. 1-13. ISSN 1434-6001

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    Abstract

    We investigate 2-colour QCD with 2 flavours of Wilson fermion at nonzero temperature T and quark chemical potential μ, with a pion mass of 700 MeV (m/m = 0.8). From temperature scans at fixed μ we find that the critical temperature for the superfluid to normal transition depends only very weakly on μ above the onset chemical potential, while the deconfinement crossover temperature is clearly decreasing with μ. We find indications of a region of superfluid but deconfined matter at high μ and intermediate T . The static quark potential determined from the Wilson loop is found to exhibit a ‘string tension’ that increases at large μ in the ‘deconfined’ region. The electric (longitudinal) gluon propagator in Landau gauge becomes strongly screened with increasing temperature and chemical potential. The magnetic (transverse) gluon shows little sensitivity to temperature, and exhibits a mild enhancement at intermediate μ before becoming suppressed at large μ.

    Item Type: Article
    Additional Information: This is the preprint version of the original published article which is available at DOI 10.1140/epja/i2013-13087-6
    Keywords: Phase transitions; gluodynamics; 2-colour matter; high density;
    Academic Unit: Faculty of Science and Engineering > Mathematical Physics
    Item ID: 4528
    Depositing User: Dr. Jonivar Skullerud
    Date Deposited: 01 Oct 2013 15:59
    Journal or Publication Title: European Physical Journal a: Hadrons and Nuclei
    Publisher: Springer Verlag
    Refereed: No
    URI:

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