Speaker
Amine Chabane
(Goethe-Universität Frankfurt)
Description
At finite imaginary values of the chemical potential, QCD is free of the sign
problem. Moreover, at high temperatures the partition function exhibits
a new symmetry (the Roberge-Weiss symmetry) connecting phases
with different orientations of the Polyakov loop, and the corresponding
phase transitions between these.
In this contribution we investigate the perturbative one-loop
effective potential for the Polyakov loop in the presence of imaginary
isospin as well as baryon chemical potentials. This leads to a novel phase
diagram, which reveals an interesting insight about the
rich phase structure and the center symmetry breaking.
We check the perturbative results using direct lattice simulations.
Authors
Amine Chabane
(Goethe-Universität Frankfurt)
Prof.
Gergely Endrödi
(University of Bielefeld)
