Temporal meson correlators at finite temperature on quenched anisotropic lattice

Details Temporal meson correlators at finite temperature on quenched anisotropic lattice Temporal meson correlators at finite temperature on quenched anisotropic lattice

2002-09-19

arxiv.org/abs/hep-lat/0209139v2

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice 2002 Nonzero temperature 3pages

Scientific paper

10.1016/S0920-5632(03)01594-9

We study charmonium correlators at finite temperature in quenched anisotropic lattice QCD. The smearing technique is applied to enhance the low energy part of the correlator. We use two analysis procedures: the maximum entropy method for extraction of the spectral function without assuming specific form, as an estimate of the shape of spectral function, and the $\chi^2$ fit assuming typical forms as quantitative evaluation of the parameters associated to the forms. We find that at $T\simeq 0.9T_c$ the ground state peak has almost the same mass as at T=0 and almost vanishing width. At $T\simeq 1.1T_c$, our result suggests that the correlator still has nontrivial peak structure at almost the same position as below $T_c$ with finite width.

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