The deconfinement transition of finite density QCD with heavy quarks from strong coupling series

Understand

Starting from Wilson's action, we calculate strong coupling series for the Polyakov loop susceptibility in lattice gauge theories for various small N_\tau in the thermodynamic limit.

• Analysing the series with Pad\'e approximants, we estimate critical couplings and exponents for the deconfinement phase transition.
• For SU(2) pure gauge theory our results agree with those from Monte-Carlo simulations within errors, which for the coarser N_\tau=1,2 lattices are at the percent level.
• For QCD we include dynamical fermions via a hopping parameter expansion.