Temporal meson correlators at finite temperature on quenched anisotropic lattice

✍ Scribed by K. Nomura; O. Miyamura; T. Umeda; H. Matsufuru

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 274 KB
• Volume: 119
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)01594-9

✦ Synopsis

We study charmonium correlators at finite temperature in quenched anisotropic lattice &CD. 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 x2 fit assuming typical forms as quantitative evaluation of the parameters associated to the forms. We find that at T N 0.92', the ground state peak has almost the same mass as at T = 0 and almost vanishing width. At T = l.lT,, our result suggests that the correlator still has nontrivial peak structure at almost the same position as below T, with finite width.