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We study the 0++ glueball correlator constructed with SU(3) anisotropicquenched lattice QCD at various temperature taking into account the possibleexistence of the thermal width in the ground-state peak. For this purpose, weadopt the Breit-Wigner ansatz, analysing the lattice data obtained with5,500-9,900 gauge configurations at each T. The results indicate thesignificant thermal width broadening as Gamma(Tc) \sim 300 MeV with a reductionin the peak center as Delta omega_0(Tc) \sim 100 MeV in the vicinity of thecritical temperature Tc.Comment: Talk given at Tokyo-Adelaide Joint Workshop on Quarks, Astrophysics  and Space Physics, Tokyo, Japan, 6-10 January 2003, 5 pages, Latex2e, 2  figure

Thermal Width Broadening of the 0++Glueball Spectrum nearTc

Thermal Width Broadening of the 0⁺⁺Glueball Spectrum nearT_c