2020/02/12 by O. Borisenko, Borisenko, O. A., V. V. Skalozub +1
Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2002.05008
openalex publication_date 2020/02/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In SU(2) gluodynamics, the Debye gluon contribution WD(A0) to the effective action of the temporal gauge field component, A0 = const, at high temperature is calculated in the background Rxi gauge. It is shown that at nonzero A0 the standard definition k0 = 0, |k| -> 0 corresponds to long distance correlations for the longitudinal in internal space gluons. The transversal gluons become screened by the A0 background field. Therefore they give zero contributions and have to be excluded from the correlation corrections. The total effective action accounting for the one-loop, two-loop and correct WD(A0) satisfies Nielsen's identity that proves gauge invariance of the A0 condensation phenomenon.