منابع مشابه
Hadronic modes and quark properties in the quark-gluon plasma
Based on interaction potentials between a heavy quark and antiquark as extracted from recent QCD lattice calculations, we set up a Brueckner-type many-body scheme to study the properties of light (anti-) quarks in a quark-gluon plasma at moderate temperatures, T 1–2 Tc. The quark-antiquark T matrix, including both color-singlet and color-octet channels, and corresponding quark self-energies and...
متن کاملQQ̄ modes in the Quark - Gluon Plasma
We study the evolution of heavy quarkonium states with temperature in a Quark-Gluon Plasma by evaluating an in-medium Q ¯ Q T −matrix within a reduced Bethe-Salpeter equation in S− and P −wave channels. The interaction kernel is extracted from finite-temperature QCD lattice calculations of the singlet free energy of a Q ¯ Q pair. Quarkonium bound states are found to gradually move across the Q ...
متن کاملTHE ROLE OF QUARK POLARIZATION IN HEAVY QUARK FRAGMENTATION
We calculate the exact fragmentation functions for c and b quark fragmentation taking into account the spin orientation of the initial heavy quark in the form of analytical and rather simple expressions. Our calculations show that spin orientation may have an important effect on the fragmentation spectrum. This effect is more striking in the cases of c ?D, D*; c? ? , ? , and ?B , B *.
متن کاملFermionic Collective Modes of an Anisotropic Quark-Gluon Plasma
Abstract We determine the fermionic collective modes of a quark-gluon plasma which is anisotropic in momentum space. We calculate the fermion self-energy in both the imaginaryand real-time formalisms and find that numerically and analytically (for two special cases) there are no unstable fermionic modes. In addition we demonstrate that in the hard-loop limit the Kubo-MartinSchwinger condition, ...
متن کاملRadial Modes of Neutron Stars with a Quark Core
We make a first calculation of eigenfrequencies of radial pulsations of neutron stars with quark cores in a general relativistic formalism given by Chandrasekhar. The equations of state (EOS) used to estimate such eigenfrequencies have been derived by taking proper care of the hadron-quark phase transition. The hadronic EOS’s have been obtained in the framework of the Brueckner-Hartree-Fock and...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.66.074020