Structure of magnetized strange quark star in perturbative QCD

Rigidly Rotating Strange Quark Star

The possibility of the existence of quark matter dates back to early seventies. Bodmer remarked that matter consisting of deconfined up, down and strange quarks could be the absolute ground state of matter at zero pressure and temperature. If this is true then objects made of such matter, so-called ”strange star”, could exist. There are several proposed mechanisms for formation of quark stars. ...

Perturbative generation of a strange-quark asymmetry in the nucleon.

We point out that perturbative evolution in QCD at three loops generates a strange-antistrange asymmetry s(x) - s(x) in the nucleon's sea just from the fact that the nucleon has nonvanishing up and down quark valence densities. The recently computed three-loop splitting functions allow for an estimate of this effect. We find that a fairly sizable asymmetry may be generated. Results for analogou...

via heavy quark symmetry and perturbative QCD

Perturbative QCD with Quark and Gluon Condensates

QCD perturbation theory using quark and gluon propagators that have an extra term at zero four-momentum is equivalent to standard PQCD in the presence of massless quark and gluon pairs in the perturbative vacuum. We verify at low orders in perturbation theory that 〈ψψ〉 6 = 0 and that quarks acquire a constituent mass. Thus chiral symmetry is spontaneously broken, and the conservation of the axi...

Strongly magnetized strange baryonic matter in neutron star

We investigate the strongly magnetized strange baryonic matter in a relativistic mean-…eld theory. We …rst take into account the hidden strange mesons and the …eld-dependent meson-baryon coupling constants. In low-density region the strongly magnetized neutron star (NS) matter is nearly iso-symmetric. The equation of state (EOS) therefore becomes softer than that of the normal NS matter. Becaus...