368 citations · 2.6k across the 47 of their papers we have counts for
5 papers · 2 filters
On the Particle Interpretation of the PVLAS Data: Neutral versus Charged Particles
Markus Ahlers, Holger Gies, Joerg Jaeckel +1
Recently the PVLAS collaboration reported the observation of a rotation of linearly polarized laser light induced by a transverse magnetic field - a signal being unexpected within…
RG flow of the Polyakov-loop potential: First status report
J. Braun, H. Gies, H. J. Pirner
We study SU(2) Yang-Mills theory at finite temperature in the framework of the functional renormalization group. We concentrate on the effective potential for the Polyakov loop whi…
Do Instantons Like a Colorful Background?
Holger Gies, Joerg Jaeckel, Jan M. Pawlowski +1
We investigate chiral symmetry breaking and color symmetry breaking in QCD. The effective potential of the corresponding scalar condensates is discussed in the presence of non-pert…
Polarized Light Propagating in a Magnetic Field as a Probe of Millicharged Fermions
Holger Gies, Joerg Jaeckel, Andreas Ringwald
Possible extensions of the standard model of elementary particle physics suggest the existence of particles with small, unquantized electric charge. Photon initiated pair productio…
Chiral phase boundary of QCD at finite temperature
Jens Braun, Holger Gies
We analyze the approach to chiral symmetry breaking in QCD at finite temperature, using the functional renormalization group. We compute the running gauge coupling in QCD for all t…