Spectrum of the Hot Hadronic Matter and Finite Temperature QCD Sum Rules
Jan, 198533 pages
Published in:
- Nucl.Phys.B 268 (1986) 220-252
- Published: 1986
Report number:
- IYa-I-P-0391
Citations per year
Abstract: (Elsevier)
The sum rules method, which is widely used for the investigation of the resonance physics within the QCD framework, is generalized to the case of finite temperatures and densities. Conditions are formulated under which this method is quite efficient for the determination of the spectrum of hadronic matter at T ≠ 0. The finite-temperature QCD sum rules are analysed in the vector channel J PC = 1 −− . Sharp and qualitative changes in the spectrum are found in the temperature interval T = 130–150 MeV. It is naturally explained as a consequence of the disappearance of confinement at the temperature T c = 140±10 MeV. The finite-temperature QCD sum rules also show that the restoration of chiral symmetry at some temperature T F cannot precede deconfinement. In the case T F ⪢ T c the sum rules indicate that the intermediate phase at T c < T < T F is dominated by quasi-free quarks with nonzero dynamical mass m q T ≈ 300 MeV.- QUANTUM CHROMODYNAMICS: SUM RULE
- FIELD THEORY: FINITE TEMPERATURE
- POTENTIAL: CHEMICAL
- QUANTUM CHROMODYNAMICS: CRITICAL PHENOMENA
- QUARK: CONFINEMENT
- QUARK: MASS
- MASS: QUARK
- MATTER: HADRONIC
- QUARK: CONDENSATION
- NUMERICAL CALCULATIONS
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