Excited QCD 2020

Center regions as a solution to the Gribov problem of the center vortex model

4 Feb 2020, 17:00

30m

Krynica Zdrój, Poland

Speaker

Rudolf Golubich (Atominstitut, Techn. Univ. Wien)

Description

The center vortex model, capable of explaining confinement and chiral
symmetry breaking, has been plagued by the lattice equivalent of
Gribov copies: different maxima of the gauge functional lead to
different predictions of the string tension. By using center regions,
that is, arbitrary loops evaluating to a center element, as guide for
the gauge fixing procedure, a solution to this problem is possible.
The success of this approach was already shown, but the algorithms
came with an arbitrary free parameter. In recent development this
parameter has been fixed, even improving the results.

Presentation materials

Handout_To_Indico.pdf