# Magnetic field influence on the early time dynamics of heavy-ion collisions

## TL;DR

This paper investigates how strong magnetic fields immediately after heavy-ion collisions influence the early dynamics of quarks, leading to anisotropic flow and affecting photon production, using a 3+1d partonic cascade model.

## Contribution

It demonstrates the impact of magnetic fields on early quark dynamics and anisotropic flow in heavy-ion collisions, incorporating the effects of collisions and exploring photon production implications.

## Key findings

- Magnetic fields induce strong positive anisotropic flow of quarks at soft transverse momenta.
- Collisions damp the magnetic field's influence on quark dynamics.
- Magnetic effects influence photon production from the non-equilibrium medium.

## Abstract

In high energy heavy-ion collisions the magnetic field is very strong right after the nuclei penetrate each other and a non-equilibrium system of quarks and gluons builds up. Even though quarks might not be very abundant initially, their dynamics must necessarily be influenced by the Lorentz force. Employing the 3+1d partonic cascade BAMPS we show that the circular Larmor movement of the quarks leads to a strong positive anisotropic flow of quarks at very soft transverse momenta. We explore the regions where the effect is visible, and explicitly show how collisions damp the effect. As a possible application we look at photon production from the flowing non-equilibrium medium.