A quenched 2-flavour Einstein-Maxwell-dilaton gauge-gravity model

TL;DR

This paper develops a holographic model with two quark flavors under magnetic fields, analyzing deconfinement transition and entropy density, showing good agreement with lattice data and confirming inverse magnetic catalysis.

Contribution

It introduces a two-flavor Einstein-Maxwell-dilaton holographic model with magnetic fields, extending previous work and solving equations via potential reconstruction in the quenched approximation.

Findings

Confirmed inverse magnetic catalysis at deconfinement transition.

Entropy density matches lattice data near the transition for moderate magnetic fields.

Model provides a self-consistent dual description of magnetic effects in QCD-like theories.

Abstract

We extend earlier work by introducing an Einstein-Maxwell-dilaton (EMD) action with two quark flavours. We solve the corresponding equations of motion in the quenched approximation (probe quark flavours) via the potential reconstruction method in presence of a background magnetic field in search for a self-consistent dual magnetic AdS/QCD model. As an application we discuss the deconfinement transition temperature confirming inverse magnetic catalysis, whilst for moderate values of the magnetic field also the entropy density compares relatively well with corresponding lattice data in the vicinity of the transition.