We study the density of states method to explore the phase diagram of the
chiral transition on the tempeature and quark chemical potential plane. Four
quark flavours are used in the analysis. Though the method is quite expensive
small lattices show an indication for a triple-point connecting three different
phases on the phase diagram.Comment: Talk presented on Lattice 2005 (non-zero temperature and density), 6
pages, 6 figure