We present preliminary results for the correlation- and spectral functions of different meson channels on the lattice. The main focus lies on gaining control over cut-off as well as on the finite-volume effects. Extrapolations of screening masses above the deconfining temperature are guided by the result of the free (T=∞) case on the lattice and in the continuum. We study the quenched non-perturbatively improved Wilson-clover fermion as well as the hypercube fermion action which might show less cut-off effects.
@article{arxiv.hep-lat/0510031,
title = {Meson correlation functions at high temperatures},
author = {S. Wissel and S. Datta and F. Karsch and E. Laermann and S. Shcheredin},
journal= {arXiv preprint arXiv:hep-lat/0510031},
year = {2010}
}