Holographic Model of Dual Superconductor for Quark Confinement

TL;DR

This paper presents a holographic model using a hairy black hole solution to describe quark confinement, capturing phase transitions and monopole condensation effects in a dual gravitational framework.

Contribution

It introduces a novel holographic model with backreacted matter fields that reproduces confinement and phase transition phenomena in QCD-like theories.

Findings

Identification of a preconfining phase via monopole condensation

Calculation of quark-antiquark potential confirming confinement

Discussion of Kaluza-Klein monopoles' role in confinement

Abstract

We show that a hairy black hole solution can provide a holographically dual description of quark confinement. There exists a one-parameter sensible metric which receives the backreaction of matter contents in the holographic action, where the scalar and gauge field are responsible for the condensation of chromomagnetic monopoles. This model features a preconfining phase triggered by second-order monopole condensation and a first-order confinement/deconfinement phase transition. To confirm the confinement, the quark-antiquark potential is calculated by probing a QCD string in both phases. At last, contribution from Kaluza-Klein monopoles in the confining phase is discussed.