A1 Journal article (refereed)
Energy-momentum tensor of the dilute ð3+1ÞD glasma (2024)

Ipp, A., Leuthner, M., Müller, D. I., Schlichting, S., Schmidt, K., & Singh, P. (2024). Energy-momentum tensor of the dilute ð3+1ÞD glasma. Physical Review D, 109(9), Article 094040. https://doi.org/10.1103/physrevd.109.094040

JYU authors or editors

Publication details

All authors or editors: Ipp, Andreas; Leuthner, Markus; Müller, David I.; Schlichting, Sören; Schmidt, Kayran; Singh, Pragya

Journal or series: Physical Review D

ISSN: 2470-0010

eISSN: 2470-0029

Publication year: 2024

Publication date: 24/05/2024

Volume: 109

Issue number: 9

Article number: 094040

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/physrevd.109.094040

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/95319

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2401.10320

Abstract

We present a succinct formulation of the energy-momentum tensor of the glasma characterizing the initial color fields in relativistic heavy-ion collisions in the color glass condensate effective theory. We derive concise expressions for the (3+1)⁢D dynamical evolution of symmetric nuclear collisions in the weak field approximation employing a generalized McLerran-Venugopalan model with nontrivial longitudinal correlations. Utilizing Monte Carlo integration, we calculate in unprecedented detail non-trivial rapidity profiles of early time observables at RHIC and LHC energies, including transverse energy densities and eccentricities. For our setup with broken boost invariance, we carefully discuss the placement of the origin of the Milne frame and interpret the components of the energy-momentum tensor. We find longitudinal flow that deviates from standard Bjorken flow in the (3+1)⁢D case and provide a geometric interpretation of this effect. Furthermore, we observe a universal shape in the flanks of the rapidity profiles regardless of collision energy and predict that limiting fragmentation should also hold at LHC energies.

Keywords: gluons; particle physics; nuclear physics

Free keywords: Non-Abelian gauge theories; Relativistic heavy-ion collisions; Strong interaction; Gluons; Differential equations

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2024

Preliminary JUFO rating: 2