muQCD
QCD at finite baryon density
Physics
Universität Münster
Institut für Theoretische Physik
Based on model calculations and early lattice attempts, it is widely believed that the QCD crossover
from hadronic to quark gluon behaviour at finite temperature strengthens with increasing baryon density,
to turn into a real phase transition at some critical end point in the phase diagram parametrised by
temperature and quark chemical potential. Furthermore, this critical point is believed to be a chiral
critical point which is continuously connected to the chiral transitions at zero density and lower
quark masses. The lattice simulations performed by us at HLRS have shown that for coarse
lattices N_t=4, a~0.3 fm, this is not the case. Instead, the chiral transition weakens as a real
chemical potential is switched on. Furthermore, decreasing the lattice spacing also appears to weaken
the transition. We propose to extend this study by investigating the situation
on finer lattices.