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Proceedings of The XXVII International Symposium on Lattice Field Theory — PoS(LAT2009)
We study charmonium correlators and spectral functions in quenched QCD, using Clover improved Wilson fermions on very fine (0.015 fm) isotropic lattices at 0.75 T c and 1.5T c . We use a new approach to distinguish the zero mode contribution from the other contributions. Once this is removed, we find that the ratios of correlators to reconstructed correlators remain almost unity at all distances. The ground state peaks of spectral functions obtained at 0.75 T c are reliable and robust. Thedoi:10.22323/1.091.0169 fatcat:bj6hae42s5eglizyyxwa3asqfu