Residual Confinement in High-temperature Yang-mills Theory *
نویسندگان
چکیده
The infrared behavior of Landau gauge gluon and ghost propagators are investigated in Yang-Mills theory at non-vanishing temperatures. Self-consistent solutions are presented for temperatures below the presumed phase transition and in the infinite temperature limit. Gluon confinement is manifest in the infrared behavior of these propagators. As expected confinement prevails below the phase transition. In the infinite-temperature limit a qualitative change is observed: the chromoelectric sector exhibits a near-perturbative behavior while long-range chro-momagnetic interactions, mediated by soft ghost modes, are still present. The latter behavior is in agreement with corresponding lattice results. It furthermore implies that part of the gluons are still confined.
منابع مشابه
Gluons at finite temperature in Landau gauge Yang–Mills theory
The infrared behavior of Yang-Mills theory at finite temperature provides access to the role of confinement. In this review recent results on this topic from lattice calculations and especially Dyson–Schwinger studies are discussed. These indicate persistence of a residual confinement even in the high–temperature phase. The confinement mechanism is very similar to the one in the vacuum for the ...
متن کامل’t Hooft loops, electric flux sectors, and confinement in SU„2... Yang-Mills theory
We use ’t Hooft loops of maximal size on finite lattices to calculate the free energy in the sectors of SU(2) Yang-Mills theory with fixed electric flux, as a function of temperature and ~spatial! volume. Our results provide evidence for the mass gap. The confinement of electric fluxes in the low temperature phase and their condensation in the high temperature phase are demonstrated. In a surpr...
متن کاملTopology in SU ( 2 ) Yang - Mills theory ∗
New results on the topology of the SU (2) Yang-Mills theory are presented. At zero temperature we obtain the value of the topological susceptibility by using the recently introduced smeared operators as well as a properly renormalized geometric definition. Both determinations are in agreement. At non-zero temperature we study the behaviour of the topological susceptibility across the confinemen...
متن کاملThe pseudoparticle approach in SU(2) Yang-Mills theory
We present an effective model for SU(2) Yang-Mills theory, the pseudoparticle approach. The basic idea is to restrict the path integral to those gauge field configurations, which can be written as a sum over a small number of pseudoparticles, and to replace the integration over all field configurations by an integration over pseudoparticle degrees of freedom, e.g. amplitudes and color orientati...
متن کاملFinite-Temperature Yang-Mills Theory in Landau Gauge
The gluon and ghost propagators in Landau Gauge Yang-Mills Theory are investigated. Self-consistent solutions are obtained from their equations of motion above and below the presumed phase transition. Gluon confinement is manifest in these solutions and can be read off the infrared behavior of the gluon and ghost propagators. Confinement prevails below the presumed phase transition. Above and i...
متن کامل