Preprint Article Version 1 This version is not peer-reviewed

Improving Center Vortex Detection by Usage of Center Regions as Guidance for the Direct Maximal Center Gauge

Version 1 : Received: 19 November 2019 / Approved: 20 November 2019 / Online: 20 November 2019 (15:39:04 CET)

A peer-reviewed article of this Preprint also exists.

Golubich, R.; Faber, M. Improving Center Vortex Detection by Usage of Center Regions as Guidance for the Direct Maximal Center Gauge. Particles 2019, 2, 491-498. Golubich, R.; Faber, M. Improving Center Vortex Detection by Usage of Center Regions as Guidance for the Direct Maximal Center Gauge. Particles 2019, 2, 491-498.

Journal reference: Particles 2019, 2, 30
DOI: 10.3390/particles2040030

Abstract

The center vortex model of quantum chromodynamic states that vortices, closed color-magnetic flux, percolate the vacuum. Vortices are seen as the relevant excitations of the vacuum, causing confinement and dynamical chiral symmetry breaking. In an appropriate gauge, as direct maximal center gauge, vortices are detected by projecting onto the center degrees of freedom. Such gauges suffer from Gribov copy problems: different local maxima of the corresponding gauge functional can result in different predictions of the string tension. By using non-trivial center regions, that is, regions whose boundary evaluates to a non-trivial center element, a resolution of this issue seems possible. We use such non-trivial center regions to guide simulated annealing procedures, preventing an underestimation of the string tension in order to resolve the Gribov copy problem.

Subject Areas

quantum chromodynamics; confinement; center vortex model; string tension; gribov copy problem

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