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Lattice QCD constraints on hybrid and quark stars

  1. TitleLattice QCD constraints on hybrid and quark stars
    Author infoYu. B. Ivanov ... [et al.]
    Author Ivanov Yu. B. (16%)
    Co-authors Khvorostukhin A. S. (16%)
    Kolomeitsev Evgeni E. 1970- (16%)
    Skokov V. V. (16%)
    Toneev V. D. (16%)
    Voskresensky Dmitri (20%)
    Source document Physical Review C. Vol. 72, no. 2 (2005), pp. 5804-5804. - Maryland : American Physical Society, 2005
    Keywords jadrová fyzika   lattice QCD   neutron stars   hybrid stars  
    LanguageEnglish
    CountryUnited States of America
    systematics 539.1
    AnnotationA QCD-motivated dynamical-quasiparticle model with parameters adjusted to reproduce the lattice-QCD equation of state is extrapolated from the region of high temperatures and moderate baryonic densities to the domain of high baryonic densities and zero temperature. The resulting equation of state matched with realistic hadronic equations of state predicts a phase transition into the quark phase at higher densities than those reachable in neutron star interiors. This excludes the possibility of the existence of hybrid (hadron-quark) stars. Pure quark stars are possible and have low masses, small radii, and very high central densities. Similar results are obtained for a simple bag model with massive quarks, fitted to reproduce the same lattice results. Self-bound quark matter is also excluded within these models. Uncertainties in the present extrapolation are discussed. Comparison with standard bag models is made
    Public work category ADC
    No. of Archival Copy26413
    Catal.org.BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici
    Databasexpca - PUBLIKAČNÁ ČINNOSŤ
    ReferencesPERIODIKÁ-Súborný záznam periodika
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