 
Summary: arXiv:heplat/0509115
v1
23
Sep
2005
Charmonium spectral functions in Nf=2 QCD
R. Morrin, A.P. Ó Cais, M.B. Oktay, M.J. Peardon, J.I. Skullerud
Trinity College Dublin
Email: jonivar@maths.tcd.ie
G. Aarts + , C.R. Allton
University of Wales Swansea
We report on a study of charmonium at high temperature in 2flavour QCD. This is the first such
study with dynamical fermions. Using an improved anisotropic lattice action, spectral functions
are extracted from correlators in the vector and pseudoscalar channels. No signs of medium
induced suppression of the ground states are seen for temperatures up to 1:5T c , while at T 2T c
there are clear signs of modifications. The current systematic and statistical uncertainties in our
data, in particular the relatively coarse lattice and small volume, do not allow us to draw a firm
conclusion at this stage.
XXIIIrd International Symposium on Lattice Field Theory
2530 July 2005
