The Investigation of Screening of Chromoelectric and Chromomagnetic Fields in Noncovariant Gauges

Authors : Elşen V VELIEV, Jale Yilmazkaya SÜNGÜ

Pages : 81-88

Doi:10.3906/zoo-1110-28

View : 16 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :According to Thermal Quantum Chromodynamics insert ignore into journalissuearticles values(TQCD); hadron matter may exist in the form of quark-gluon plasma insert ignore into journalissuearticles values(QGP); at high temperatures and densities. The aim of the present work is to investigate the screening of chromoelectric and chromomagnetic fields in QGP in noncovariant gauges. In noncovariant gauges, gluon propagator has unphysical poles and singularities appear in the gluon self-energy diagram calculations. In this paper, we investigate gluon self-energy in lightcone and temporal gauges. In order to remove singularities, we use the Mandelstam-Leibbrandt prescription insert ignore into journalissuearticles values(ML prescription);. We obtain that chromoelectric fields are screened, but chromomagnetic fields are not screened. In coordinate space, the screening of chromoelectric fields reduces the range of gauge interactions. In momentum space, it contributes to regulate the infrared behavior of the various n-point Green functions. Also, it is shown that the obtained results are gauge invariant.
Keywords : Thermal Quantum Chromodynamics, Quark gluon Plasma, Lightcone Gauge, Temporal Gauge, Mandelstam Leibbrandt Prescription, Gluon Screening Masses