Partial restoration of chiral symmetry of vector mesons in hot hadronic matter: a possible signature of quark-gluon plasma

1996 ◽  
Vol 103 (1) ◽  
pp. 113-120
Author(s):  
Kohsuke Yagi
Keyword(s):  
Chiral Symmetry ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Hadronic Matter ◽  
Vector Mesons ◽  
Partial Restoration

scholarly journals MONOPOLES FROM QUARK CONDENSATES IN QCD

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2356-2359
Author(s):  
M. N. CHERNODUB
Keyword(s):  
Chiral Symmetry ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Chiral Condensate ◽  
Quark Condensate ◽  
Chiral Symmetry Restoration ◽  
Gauge Invariant ◽  
Different Temperatures

Chiral monopoles are hedgehoglike structures in local chiral condensates in QCD. These monopoles are (i) made of quark and gluon fields; (ii) explicitly gauge-invariant; (iii) they carry quantized and conserved chromomagnetic charge. We argue that the chiral condensate vanishes in a core of the chiral monopole while the density of these monopoles increases with temperature wiping out the quark condensate in quark-gluon plasma. We suggest that the chiral monopoles are responsible for the chiral symmetry restoration in QCD. We also argue that the chiral monopoles are unlikely to be responsible for confinement of color. Thus, phenomena of the chiral symmetry restoration and the color deconfinement in QCD are not necessarily related to each other and the corresponding transitions may happen at different temperatures.

scholarly journals Nonextensive statistical effects in the quark-gluon plasma formation at relativistic heavy-ion collisions energies

Open Physics ◽  
2012 ◽  
Vol 10 (3) ◽  
Author(s):  
Gianpiero Gervino ◽  
Andrea Lavagno ◽  
Daniele Pigato
Keyword(s):  
Quark Gluon Plasma ◽  
Mean Field ◽  
Relativistic Equation ◽  
Baryon Number ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Baryon Density ◽  
Hadronic Matter ◽  
Relativistic Heavy Ion Collisions ◽  
Relativistic Mean Field

AbstractWe investigate the relativistic equation of state of hadronic matter and quark-gluon plasma at finite temperature and baryon density in the framework of the non-extensive statistical mechanics, characterized by power-law quantum distributions. We impose the Gibbs conditions on the global conservation of baryon number, electric charge and strangeness number. For the hadronic phase, we study an extended relativistic mean-field theoretical model with the inclusion of strange particles (hyperons and mesons). For the quark sector, we employ an extended MIT-Bag model. In this context we focus on the relevance of non-extensive effects in the presence of strange matter.

EFFECTIVE MESONIC AND BARYONIC DEGREES OF FREEDOM IN NEUTRON STARS

2004 ◽  
Vol 13 (07) ◽  
pp. 1365-1373 ◽  
Author(s):  
MANFRED DILLIG ◽  
MATHIAS SCHOTT ◽  
EDUARDO F. LÜTZ ◽  
ALEXANDRE MESQUITA ◽  
CÉSAR A. Z. VASCONCELLOS
Keyword(s):  
Neutron Stars ◽  
Quark Gluon Plasma ◽  
Degrees Of Freedom ◽  
Gluon Plasma ◽  
Hadronic Matter

We present a sketchy survey on the role of effective mesonic and baryonic degrees of freedom in dense hadronic matter and briefly mention still very crude attempts to include constituent quarks degrees of freedom for a transition to a quark gluon plasma.

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