Quantum color screening in external magnetic field

TL;DR

This paper calculates the color screening mass in hot, magnetized QCD matter, showing that magnetic field effects are minor compared to thermal effects, and can be treated perturbatively.

Contribution

It provides a comprehensive calculation of the color screening mass in a thermalized, magnetized QCD medium without restricting magnetic field strength, extending previous approximations.

Findings

Magnetic field effects on QCD matter are weaker than thermal effects.

The magnetic field in heavy ion collisions can be treated as a perturbation.

The calculation covers both weak and strong magnetic field regimes.

Abstract

We calculate color screening mass in a thermalized and magnetized QCD matter in the frame of loop resummation theory without restriction to the magnetic field strength. Our full calculation covers the often used approximations for weak magnetic field at high temperature and strong magnetic field at low temperature. We find that while the magnetic field created in heavy ion collisions at RHIC and LHC energies is probably the strongest one in nature, its effect on the QCD matter is still weaker in comparison with the high temperature of the fireball, and therefore can safely be treated as a perturbation.