In the continuum limit, κ_PS, κ_VA and κ_TX are all consistent with zero and with each other down to 164 MeV, implying concurrent chiral and U(1)_A restoration in the quark-connected nonsinglet sector.
Possible New Phase of Thermal QCD
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Derives a regularized formula for the gluon condensate from the Dirac spectral density, linking it to the quark condensate and clarifying anomalous versus spontaneous symmetry breaking in QCD.
Lattice QCD finds evidence for effective U(1)_A symmetry restoration at 319(22) MeV, well above the chiral crossover.
citing papers explorer
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RG-Invariant Symmetry Ratio for QCD: A Study of $U(1)_A$ and Chiral Symmetry Restoration
In the continuum limit, κ_PS, κ_VA and κ_TX are all consistent with zero and with each other down to 164 MeV, implying concurrent chiral and U(1)_A restoration in the quark-connected nonsinglet sector.
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Glue Condensate, Quark Condensate and Dirac Spectral Density
Derives a regularized formula for the gluon condensate from the Dirac spectral density, linking it to the quark condensate and clarifying anomalous versus spontaneous symmetry breaking in QCD.
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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.