Fluctuations of conserved charges, chiral spin symmetry and deconfinement in an SU(2)_color subgroup of SU(3)_color above T_c

Abstract

Above a pseudocritical temperature of chiral symmetry restoration T_c the energy and the pressure are very far from the quark-gluon-plasma limit (i.e. ideal gas of free quarks and gluons). At the same time very soon above T_c fluctuations of conserved charges behave as if quarks were free particles. Within the T_c - 3T_c interval a chiral spin symmetry emerges in QCD which is not consistent with free quarks and suggests that degrees of freedom are chirally symmetric quarks bound into the color-singlet objects by the chromoelectric field. Here we analyse temporal and spatial correlators in this interval and demonstrate that they indicate simultaneously the chiral spin symmetry as well as absence of the interquark interactions in channels constrained by a current conservation. The latter channels are responsible for both fluctuations of conserved charges and for dileptons. Assuming that a SU(2)_color subgroup of SU(3)_color is deconfined soon above T_c but confinement persits in SU(3)_color/SU(2)_color in the interval T_c - 3T_c we are able to reconcile all empirical facts listed above.

arXiv comment10 pages; Final version; accepted by PRD

References in corpus (23)

• Monopole Condensation, And Confinement In N=2 Supersymmetric Yang-Mills Theory
• The Chiral Magnetic Effect
• The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
• Color superconductivity in dense quark matter
• QCD at Finite Baryon Density: Nucleon Droplets and Color Superconductivity
• Full result for the QCD equation of state with 2+1 flavors
• The QCD transition temperature: results with physical masses in the continuum limit II.
• Chiral crossover in QCD at zero and non-zero chemical potentials
• The QCD Equation of State to $\mathcal{O}({\mu }_B^6)$ from Lattice QCD
• Fluctuation Probes of Quark Deconfinement
• Charged Particle Ratio Fluctuation as a Signal for QGP
• Evidence of effective axial U(1) symmetry restoration at high temperature QCD
• Equation of State in 2+1 Flavor QCD at High Temperatures
• Symmetries of spatial meson correlators in high temperature QCD
• Anatomy of Deconfinement
• Symmetries of mesons after unbreaking of chiral symmetry and their string interpretation
• Isoscalar mesons upon unbreaking of chiral symmetry
• Hadronic fluctuations in the QGP
• SU(4) symmetry of the dynamical QCD string and genesis of hadron spectra
• Chiral-spin symmetry of the meson spectral function above $T_c$
• Approximate degeneracy of $J=1$ spatial correlators in high temperature QCD
• Partial Deconfinement
• Chiralspin symmetry and QCD at high temperature

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