Manifestations of the axial anomaly in finite temperature QCD

Abstract

We compute the flavor singlet meson correlators and screening masses in quenched and $N_f=2$ QCD at $N_t=8$. The consequences of our results for the realization of the $U_A(1)$ symmetry at finite T are discussed and an interpretation of our measurements in terms of the behaviour of the low lying fermionic modes is proposed.

Talk presented at LATTICE96(chirality in QCD)

References in corpus (3)

• An Accelerated Conjugate Gradient Algorithm to Compute Low-Lying Eigenvalues --- a Study for the Dirac Operator in SU(2) Lattice QCD
• Dirac Spectrum, Axial Anomaly and the QCD Chiral Phase Transition
• The Eta-prime and Cooling with Staggered Fermions

Cited by in corpus (8)

• Two flavor chiral phase transition from nonperturbative flow equations
• Which Chiral Symmetry is Restored in High Temperature QCD?
• Topology, fermionic zero modes and flavor singlet correlators in finite temperature QCD
• Thermodynamics of Lattice QCD with Chiral 4-Fermion Interactions
• Topology, fermionic zero modes and flavor singlet correlators in finite temperature QCD
• The U(1) Problem in Chiral Random Matrix Models
• Interplay between $SU(N_f)$ chiral symmetry, $U(1{)}_A$ axial anomaly and massless bosons
• Topology in the $SU(N_f)$ chiral symmetry restored phase of unquenched QCD and axion cosmology