AMY Lorentz invariant parton cascade -- the thermal equilibrium case

TL;DR

ALPACA is a Lorentz invariant parton cascade simulation tool based on the AMY kinetic theory, capable of modeling QCD thermal equilibrium and estimating key parameters from single events.

Contribution

It introduces ALPACA, a novel Lorentz invariant parton cascade framework that accurately reproduces thermal equilibrium behavior in QCD.

Findings

Successfully reproduces expected thermal equilibrium behavior

Estimates effective masses and temperature from single events

Validates the framework through extensive testing

Abstract

We introduce ALPACA, a Lorentz invariant parton cascade encoding the AMY effective kinetic theory of QCD at high temperatures. It solves the Boltzmann equation by explicitly simulating the evolution of parton ensembles corresponding to single events. We discuss how the effective masses and temperature entering the elastic collision and splitting/merging rates can be estimated from just a single event. We perform an extensive validation of the framework by showing that it reproduces the expected behaviour in thermal equilibrium.