Holographic heavy ion collisions with baryon charge

TL;DR

This paper uses holographic simulations of charged shockwave collisions in anti-de Sitter space to model heavy ion collisions with baryon charge, revealing how charge affects observable outcomes and baryon stopping.

Contribution

It introduces a numerical holographic model for baryon charge in heavy ion collisions, analyzing charge dynamics and comparing with experimental data.

Findings

Charge density effects on observables are typically under 15%.

The baryon charge rapidity profile is broader than the energy density profile.

Significant baryon stopping is observed, aligning with experimental results.

Abstract

We numerically simulate collisions of charged shockwaves in Einstein-Maxwell theory in anti-de Sitter space as a toy model of heavy ion collisions with non-zero baryon charge. The stress tensor and the baryon current become well described by charged hydrodynamics at roughly the same time. The effect of the charge density on generic observables is typically no larger than 15\%. %The rapidity profile of the charge is wider than the profile of the local energy density. We find significant stopping of the baryon charge and compare our results with those in heavy ion collision experiments.