Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2009-06-06
PoS Confinement8:055, 2008
Physics
High Energy Physics
High Energy Physics - Lattice
5 pages, 1 figure; talk presented at the 8th Conference on Quark Confinement and the Hadron Spectrum: Confinement8, Mainz, Ger
Scientific paper
The random vortex world-surface model is an infrared effective model of Yang-Mills dynamics based on center vortex degrees of freedom. These degrees of freedom carry topological charge through writhe and self-intersection of their world-surfaces. A practical implementation of the model realizes the vortex world-surfaces by composing them of elementary squares on a hypercubic lattice. The topological charge for specifically such configurations is constructed in the case of SU(3) color. This necessitates a proper treatment of vortex color structure at vortex branchings, a feature which is absent in the SU(2) color case investigated previously. On the basis of the construction, the topological susceptibility is evaluated in the random vortex world-surface ensemble, both in the confined low-temperature as well as in the deconfined high-temperature phase.
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