2003/10/31 by E. -M. Ilgenfritz, E.‐M. Ilgenfritz, B. V. Martemyanov +4 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum Chromodynamics and Particle Interactions #Quantum, superfluid, helium dynamics #hep-lat
paper · pdf · doi:10.1140/epjc/s2004-01747-y
published as Eur.Phys.J. C34 (2004) 439-445 · 14 pages, 7 figures
openalex publication_date 2004/04/07 · arxiv created 2004/04/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Finite temperature Euclidean SU(2) lattice gauge fields close to the deconfinement phase transition are subjected to cooling. We find relatively stable or absolutely stable configurations with an action below the one-instanton action Sinst=2π2 both in the deconfinement and the confinement phases. In this paper we attempt an interpretation of these lowest action configurations. Their action is purely magnetic and amounts to S/Sinst ≈ Nt/Ns, where Nt (Ns) is the timelike (spacelike) lattice size, while the topological charge vanishes. In the confined phase part of the corresponding lattice configurations turns out to be absolutely stable with respect to the cooling process in which case Abelian projection reveals a homogeneous, purely Abelian magnetic field closed over the "boundary" in one of the spatial directions. Referring to the dyonic structure established for the confinement phase near Tc and based on the observation made for this phase that such events below the instanton action Sinst emerge from dyon-antidyon annihilation, the question of stability (metastability) is discussed for both phases. The hypothetically different dyonic structure of the deconfinement phase, inaccessible by cooling, could explain the metastability.