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Quenched QCD at finite temperature with chiral fermions

Jul, 2001

4 pages

Published in:

Phys.Rev.D 65 (2002) 094504

e-Print:

hep-lat/0107022 [hep-lat]

DOI:

10.1103/PhysRevD.65.094504

Report number:

TIFR-TH-01-27,
T01-076

View in:

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Abstract: (arXiv)

We study physics at temperatures just above the QCD phase transition (Tc) using chiral (overlap) Fermions in the quenched approximation of lattice QCD. Exact zero modes of the overlap Dirac operator are localized and their frequency of occurrence drops with temperature. This is closely related to axial U(1) symmetry, which remains broken up to 2Tc. After subtracting the effects of these zero modes, chiral symmetry is restored, as indicated by the behavior of the chiral condensate. The pseudoscalar and vector screening masses are close to ideal gas values.

11.15.Ha
12.38.Mh
fermion: lattice field theory
gauge field theory: SU(3)
finite temperature
approximation: quenching
fermion: chiral
critical phenomena: finite temperature
operator: Dirac
zero mode

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