Jul 24 – 30, 2016
Highfield Campus, University of Southampton
Europe/London timezone

The QCD deconfinement critical point as a function of N_t with N_f=2 flavours of unimproved Wilson fermions

Jul 25, 2016, 4:45 PM
Building 32 Room 1015 (Highfield Campus, University of Southampton)

Building 32 Room 1015

Highfield Campus, University of Southampton

Talk Nonzero Temperature and Density Nonzero Temperature and Density


Mr Christopher Czaban (Goethe University Frankfurt am Main)


QCD at zero baryon density in the limit of infinite quark mass undergoes a first order deconfinement phase transition at a critical temperature T_c corresponding to the breaking of the global centre symmetry. In the presence of dynamical quarks the global centre symmetry is explicitly broken. Lowering the quark mass the first order phase transition weakens and terminates in a second order Z(2) point. Beyond this line confined and deconfined regions are analytically connected by a crossover transition. As the continuum limit is approached (i.e. the lattice spacing is decreased) the region of first order transitions expands towards lower masses. We study the deconfinement critical point with standard Wilson fermions and N_f=2 flavours. Therefore we simulate several kappa values on N_t=8 and various aspect ratios in order to extrapolate to the thermodynamic limit, applying finite size scaling. We estimate if and when a continuuum extrapolation is possible.

Primary author

Mr Christopher Czaban (Goethe University Frankfurt am Main)


Prof. Owe Philipsen (Goethe University Frankfurt am Main)

Presentation materials