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The Thermal Glueball at Finite Temperature in SU(3) Anisotropic Lattice QCD

Noriyoshi Ishii·Hideo Suganuma·Hideo Matsufuru
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Abstract

The thermal glueball is studied at finite temperature by using SU(3) anisotropic lattice QCD with beta_{lat}=6.25, the renormalized anisotropy xi = a_s/a_t = 4 over the lattice of the size 20^3xN_t with various N_t at the quenched level. While the narrow peak ansatz leads to the significant polemass reduction of about 300 MeV near the critical temperature T_c, Breit-Wigner ansatz which can take into account the possible appearance of the thermal width leads to the significant thermal width broadening of about 300 MeV with a modest reduction of the peak center of about 100 MeV.

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Noriyoshi Ishii, Hideo Suganuma, Hideo Matsufuru. 2002-12-06. The Thermal Glueball at Finite Temperature in SU(3) Anisotropic Lattice QCD. https://arxiv.org/abs/hep-lat/0212010

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