A Constraint-Based Approach to the Chiral Magnetic Effect

TL;DR

This paper introduces a holographic model incorporating boundary conditions to simulate the Chiral Magnetic Effect, linking topological phenomena in heavy ion collisions and astrophysics within the AdS/CFT framework.

Contribution

It presents a novel method to embed the Chiral Magnetic Effect into holographic QCD models using specific boundary conditions.

Findings

Successfully reproduces the Chiral Magnetic Effect in a holographic setting

Connects topological field configurations with observable phenomena in heavy ion collisions and pulsars

Provides a framework for future studies of topological effects in strongly coupled systems

Abstract

We propose a way to introduce the currents responsible for the Chiral Magnetic Effect, and similar phenomena, into the AdS/CFT description. Such currents are thought to occur in heavy ion collisions due to topologically non-trivial field configurations and in dense stars due to beta decay. They may be responsible for the P and CP odd effects seen at RHIC and the anomalously large velocities observed in some pulsars. We discuss the boundary conditions that allow the phenomenon to exist in real systems and show how one would introduce similar boundary conditions into a holographic model of QCD such that the current is reproduced.