Christopher Pinke

Thermal QCD transition with two flavors of twisted mass fermions

We investigate the thermal QCD transition with two flavors of maximally twisted mass fermions for a set of pion masses, 300 MeV \textless

The nature of the Roberge-Weiss transition in Nf = 2 QCD with Wilson fermions

m_\pi

Nf=2QCD chiral phase transition with Wilson fermions at zero and imaginary chemical potential

\textless 500 MeV, and lattice spacings

Roberge-Weiss transition inNf=2QCD with Wilson fermions andNτ=6

a

Lattice-CSC: Optimizing and Building an Efficient Supercomputer for Lattice-QCD and to Achieve First Place in Green500

\textless 0.09 fm. We determine the pseudo-critical temperatures and discuss their extrapolation to the chiral limit using scaling forms for different universality classes, as well as the scaling form for the magnetic equation of state. For all pion masses considered we find resonable consistency with O(4) scaling plus leading corrections. However, a true distinction between the O(4) scenario and a first order scenario in the chiral limit requires lighter pions than are currently in use in simulations of Wilson fermions.

Twisted-Mass Lattice QCD using OpenCL

At imaginary values of the quark chemical potential

Pseudo-Critical Temperature and Thermal Equation of State from Nf = 2 Twisted Mass Lattice QCD

\ensuremath{\mu}

The

, quantum chromodynamics shows an interesting phase structure due to an exact center, or Roberge-Weiss (RW), symmetry. This can be used to constrain QCD at real

N_f=2

\ensuremath{\mu}

chiral phase transition from imaginary chemical potential with Wilson Fermions

, where the sign problem prevents Monte Carlo simulations of the lattice theory. In previous studies of this region with staggered fermions it was found that the RW endpoint, where the center transition changes from first order to a crossover, depends nontrivially on the quark mass: for high and low masses, it is a triple point connecting to the deconfinement and chiral transitions, respectively, changing to a second-order endpoint for intermediate mass values. These parameter regions are separated by tricritical points. Here we present a confirmation of these findings using Wilson fermions on