Dense Quark Matter Conductivity in Ultra-Intense Magnetic Field

TL;DR

This paper investigates the electrical conductivity of dense quark matter in ultra-strong magnetic fields, revealing that conductivity is only weakly affected by the magnetic field strength, which has implications for heavy-ion collision experiments.

Contribution

It provides a calculation of quark matter conductivity at high density, challenging the expectation that magnetic fields significantly alter conductivity.

Findings

Conductivity weakly depends on magnetic field strength.

Magnetic field duration may extend if conductivity is high.

Results impact understanding of quark-gluon plasma behavior.

Abstract

Heavy-ion collisions generate a huge magnetic field of the order of $10^{18} G $ for the duration of about 0.2 fm/c. This time may become an order of magnitude longer if the electrical conductivity of quark matter is large. We calculate the conductivity in the regime of high density and show that contrary to naive expectations it only weakly depends on the MF.