出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We explore the continuum limit a ! 0 of meson correlation functions at finite temperature. In detail we analyze finite volume and lattice cut-off effects in view of possible consequences for continuum physics. We perform calculations on quenched gauge configurations using the clover improvedWilson fermion action. We present and discuss simulations on isotropic N3s 16 lattices with Ns = 32;48;64;128 and 1283Nt lattices with Nt = 16;24;32;48 corresponding to lattice spacings in the range of 0:01 fm < a < 0:031 fm at T ' 1:45Tc. Continuum limit extrapolations of vector meson and pseudo scalar correlators are performed and their large distance expansion in terms of thermal moments is introduced. We discuss consequences of this analysis for the calculation of the electrical conductivity of the QGP at this temperature.
