Gluon propagators in $$2+1$$ 2 + 1 lattice QCD with nonzero isospin chemical potential

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2021-08, Vol.81 (8), p.1-13
• Main Authors: V. G. Bornyakov, A. A. Nikolaev, R. N. Rogalyov, A. S. Terentev
• Format: Article
• Language: English
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-021-09526-6

Abstract The static longitudinal and transverse gluon propagators in the Landau gauge are studied in $$2+1$$ 2 + 1 lattice QCD with nonzero isospin chemical potential $$\mu _I$$ μ I . Parameterization of the momentum dependence of the propagators is provided for all values of the chemical potential under study. We find that the longitudinal propagator is infrared suppressed at nonzero $$\mu _I$$ μ I with suppression increasing with increasing $$\mu _I$$ μ I . It is found, respectively, that the electric screening mass is increasing with increasing $$\mu _I$$ μ I . Additionally, we analyze the difference between two propagators as a function of the momentum and thus compare interactions in chromoelectric and chromomagnetic sectors.