Work

Isotropization in heavy ion collisions in the 2PI formalism

Year: 2025

Type: article

Abstract: An important question in heavy-ion collisions is how the initial far-from-equilibrium medium evolves and thermalizes while it undergoes a rapid longitudinal expansion. In this presentation, we show how to use the two-particle irreducible (2PI) effective action to address this question, focusing on ϕ 4 scalar theory truncated at three loops. We present numerical results for quantities such as the occupation number, the thermal mass, and the number density.

Source: Journal of subatomic particles and cosmology.

DOI: 10.1016/j.jspc.2025.100222

Author: François Gelis

Institutions: Centre National de la Recherche Scientifique, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, Institut de Physique Théorique

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $1,800

Funders: Agence Nationale de la Recherche, Labex, Grand Équipement National De Calcul Intensif