An SU(2) KvBLL caloron gas model and confinement

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dc.creatorGerhold, P.
dc.creatorIlgenfritz, E. -M.
dc.creatorMüller-Preussker, M.
dc.date2006-07-28
dc.date2006-07-31
dc.date.accessioned2026-07-07T10:25:12Z
dc.date.available2026-07-07T10:25:12Z
dc.descriptionA semi-classical model is developed to describe pure SU(2) Yang-Mills gluodynamics at finite temperature as a dilute, non-interacting gas of Kraan-van Baal-Lee-Lu calorons including the case of non-trivial holonomy. Temperature dependent parameters of the model (asymptotic caloron holonomy, caloron density and caloron size distribution) are discussed from the point of view of lattice observations and of in-medium modifications of the one-loop caloron amplitude. Space-like string tensions running into plateaux at distances R \approx 0.8 - 1.3 fm are obtained and compared to lattice results in order to find more precisely the average caloron size. Then, the quark-antiquark free energy as predicted by the model is considered. In the confined phase a linear rise with the separation can be observed up to R \approx 4 fm, whereas it runs into plateaux above T_c. Screening effects in the adjoint potentials are observed together with an approximate Casimir scaling of the caloron contribution to the fundamental and adjoint forces. In Abelian projection, space-like percolation of monopoles is found in the confined phase only. Thus, taking the non-trivial holonomy into account, confinement properties of pure SU(2) Yang-Mills gluodynamics can be described by a semi-classical approach up to distances one order of magnitude larger than the caloron size.
dc.description26 pages, 14 figures, textheight changed
dc.identifierhttps://arxiv.org/abs/hep-ph/0607315
dc.identifierhttp://arxiv.org/abs/hep-ph/0607315
dc.identifierNucl.Phys.B760:1-37,2007
dc.identifierdoi:10.1016/j.nuclphysb.2006.10.003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176458
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Lattice
dc.titleAn SU(2) KvBLL caloron gas model and confinement
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