Thermalization in External Magnetic Field

TL;DR

This paper investigates how an external magnetic field influences meson thermalization in a strongly coupled gauge theory using the AdS/CFT correspondence, revealing that magnetic fields can accelerate the thermalization process.

Contribution

It demonstrates, through numerical analysis, that an external magnetic field can speed up meson thermalization in the holographic dual, a novel insight into magnetic effects in gauge/gravity duality.

Findings

Thermalization occurs faster with a magnetic field.

The acceleration effect persists up to a certain magnetic field strength.

Magnetic field influences horizon formation on the D7-brane.

Abstract

In the AdS/CFT framework meson thermalization in the presence of a constant external magnetic field in a strongly coupled gauge theory has been studied. In the gravitational description the thermalization of mesons corresponds to the horizon formation on the flavour D7-brane which is embedded in the AdS_5 x S^5 background in the probe limit. The apparent horizon forms due to the time-dependent change in the baryon number chemical potential, the injection of baryons in the gauge theory. We will numerically show that the thermalization happens even faster in the presence of the magnetic field on the probe brane. We observe that this reduction in the thermalization time sustains up to a specific value of the magnetic field.