https://doi.org/10.1140/epjc/s10052-025-14329-0
Regular Article - Theoretical Physics
Thermal quench of a dynamical QCD model in an external electric field
1
Department of Engineering Sciences and Physics, Buein Zahra Technical University, Qazvin, Buein Zahra, Iran
2
Department of Computer Technology and Systems, Kuban State Agrarian University, Krasnodar, Russia
Received:
22
January
2025
Accepted:
16
May
2025
Published online:
10
June
2025
In this article, we investigate the thermal equilibration of the holographic QCD model dual to the Einstein–Maxwell–Dilaton (EMD) gravity in the presence of an external electric field. The model captures the QCD features at finite temperature and finite chemical potential in both confinement and deconfinement phases and could be considered a good candidate to study the dynamics of the strongly interacting system in out-of-equilibrium conditions. For this purpose, we examine the instability imposed by an external electric field using the AdS/CFT dictionary and study the electric current flow and its relaxation for this holographic model. We study the effects of temperature, electric field strength, and chemical potential on the current flow of the stationary state by applying a constant electric field. Additionally, for a time-dependent electric field, we investigate the relaxation time scales of the system using equilibration time. Finally, we compare our results with those from other holographic models and experiments.
© The Author(s) 2025
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