Magnetized Quark-Gluon Plasma at the LHC

• Published in: Physics of particles and nuclei letters 2018-11, Vol.15 (6), p.568-575
• Main Authors: Skalozub, V., Minaiev, P.
• Format: Article
• Language: English
• Subjects: Color; Critical temperature; Gluons; Heavy ions; High temperature; Ionic collisions; Large Hadron Collider; Particle and Nuclear Physics; Phase transitions; Physics; Physics and Astronomy; Physics of Elementary Particles and Atomic Nuclei. Theory; Quantum chromodynamics; Quark-gluon plasma; Quarks; Temperature dependence; Transition temperature
• ISSN: 1547-4771; 1531-8567
• DOI: 10.1134/S1547477118060171

In QCD, the strengths of the large scale temperature dependent chromomagnetic, B 3 , B 8 , and usual magnetic, H fields spontaneously generated in quark-gluon plasma after the deconfinement phase transition (DPT), are estimated. The consistent at high temperature effective potential accounting for the oneloop plus daisy diagrams is used. The heavy ion collisions at the LHC and temperatures T not much higher than the phase transition temperature T d are considered. The critical temperature for the magnetized plasma is found to be T d ( H ) ∼ 110–120 MeV. This is essentially lower compared to the zero field value T d ( H =0) ∼ 160–180 MeV usually discussed in the literature. Due to contribution of quarks, the color magnetic fields act as the sources generating H . The strengths of the fields are B 3 ( T ), B 8 ( T ) ∼ 10 18 –10 19 G, H ( T ) ∼ 10 16 –10 17 G for temperatures T ∼ 160–220 MeV. At temperatures T < 110–120 MeV the effective potential minimum value being negative approaches to zero. This is signaling the absence of the background fields and color confinement.