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Scalar Glueball Mass Reduction at Finite Temperature in SU(3) Anisotropic Lattice QCD

Noriyoshi Ishii, Hideo Suganuma, Hideo Matsufuru

hep-latarXiv:hep-lat/0109011

Abstract

We report the first study of the glueball properties at finite temperatures below Tc using SU(3) anisotropic lattice QCD with beta=6.25, the renormalized anisotropy xi as/at = 4 and 203 × Nt (Nt=35,36,37,38,40,43,45,50,72) at the quenched level. From the temporal correlation analysis with the smearing method, about 20 % mass reduction is observed for the lowest scalar glueball as mG(T)=1250 50MeV for 0.8 Tc < T < Tc in comparison with mG 1500 1700MeV at T 0.

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