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Lattice QCD constraints on hybrid and quark stars
Title Lattice QCD constraints on hybrid and quark stars Author info Yu. 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 Language English Country United States of America systematics 539.1 Annotation A 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 Copy 26413 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
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