# The First fm/c of Heavy-Ion Collisions

Source: [The First fm/c of Heavy-Ion Collisions](<https://www.sota2.com/research/paper/68fa3b461e209131ce8d17ce>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T00:31:02.322Z

Authors: Soeren Schlichting, Derek Teaney

Published: 2019-08-06T12:51:34.000Z

## Abstract

We present an introductory review of the early time dynamics of high-energy heavy-ion collisions and the kinetics of high temperature QCD. The equilibration mechanisms in the quark-gluon plasma uniquely reflect the non-abelian and ultra-relativistic character of the many body system. Starting with a brief expose of the key theoretical and experimental questions, we provide an overview of the theoretical tools employed in weak coupling studies of the early time non-equilibrium dynamics. We highlight theoretical progress in understanding different thermalization mechanisms in weakly coupled non-abelian plasmas, and discuss their relevance in describing the approach to local thermal equilibrium during the first ${\\rm fm}/c$ of a heavy-ion collision. Some important connections to the phenomenology of heavy-ion collisions are also briefly discussed.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1908.02113>)

[PDF](<https://arxiv.org/pdf/1908.02113.pdf>)