Excited QCD 2018

Session

Talks - Wed, Morning, 1st session

14 Mar 2018, 09:00

Kopaonik, Serbia

4. Accessing the topological susceptibility via the Gribov horizon

Caroline Felix

14/03/2018, 09:00

The topological susceptibility, $\chi^4$, following the work of Witten and Veneziano, explains the $\eta^{\prime}$ mass, solving the $U(1)_{A}$ problem. A nonzero $\chi^4$ is caused by the with Veneziano Ghost, an unphysical mass pole in topological current $K_{\mu}$ correlator. Recently, Kharzeev and Levin attempted to connect the Veneziano Ghost with confinement and so with Gribrov copies...

32. The center vortex model of the QCD-vacuum, successes and problems

Mr Manfried Faber (Vienna University of Technology)

14/03/2018, 09:30

The center vortex model is able to explain confinement, chiral symmetry breaking and the topological charge of QCD vacuum configurations. Maximal center gauge and center projection are very successful methods to detect center vortices. However, they are know to fail for smooth field configurations. We suggest to use the non-Abelian Stokes law to improve the detection of center vortex regions....

8. A fresh look at the (non)-Abelian Landau-Khalatnikov-Fradkin transformations

Mr Tim De Meerleer (KULeuven)

14/03/2018, 10:00

The Landau-Khalatnikov-Fradkin transformations (LKFTs) allow to
interpolate $n$-point functions between different gauges. We first
offer an alternative derivation of these LKFTs for the gauge and
fermions field in the Abelian (QED) case when working in the class
of linear covariant gauges. Our derivation is based on the
introduction of a gauge invariant transversal gauge field, which
allows a...