Dense and Hot Holographic QCD: Finite Baryonic E Field

TL;DR

This paper studies how dense and hot holographic QCD responds to a static baryonic electric field, revealing vacuum decay, quark pair production, and generalized Ohm's law in this context.

Contribution

It extends the holographic QCD model to analyze electric field effects, including vacuum decay and electrical conductivity at finite temperature and density.

Findings

Strong fields cause vacuum decay and quark pair production.

Generalized Schwinger function for dense holographic QCD.

Derived Ohm's law at high temperature and density.

Abstract

We investigate the response of dense and hot holographic QCD (hQCD) to a static and baryonic electric field E using the chiral model of Sakai and Sugimoto. Strong fields with E>(\sqrt\lambda M_{KK})^2 free quark pairs, causing the confined vacuum and matter state to decay. We generalize Schwinger's QED persistence function to dense hQCD. At high temperature and density, Ohm's law is derived generalizing a recent result by Karch and O'Bannon to the chiral case.