Recognition: unknown
Which chiral symmetry is restored in hot QCD?
classification
✦ hep-ph
hep-lat
keywords
chiralsymmetrypossiblerestorationrestoredapproximatelycalculationsclarify
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We review the current status of the problem of chiral symmetry restoration, discussing an open question of whether at the $SU(N_f)_A$ restoration point $T=T_c$ the $U(1)_A$ chiral symmetry is or is not (approximately) restored. New lattice and instanton-based studies are considered, and some new calculations are suggested to clarify the issue. We also speculate on possible experimental manifestations of two possible scenarios.
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Forward citations
Cited by 1 Pith paper
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On the effective restoration of $U(1)_A$ symmetry at finite temperature
Lattice QCD finds evidence for effective U(1)_A symmetry restoration at 319(22) MeV, well above the chiral crossover.
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