A1 Journal article (refereed)
Evolution of initial stage fluctuations in the glasma (2021)


Guerrero-Rodríguez, P., & Lappi, T. (2021). Evolution of initial stage fluctuations in the glasma. Physical Review D, 104(1), Article 014011. https://doi.org/10.1103/physrevd.104.014011


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Publication details

All authors or editors: Guerrero-Rodríguez, Pablo; Lappi, Tuomas

Journal or series: Physical Review D

ISSN: 2470-0010

eISSN: 2470-0029

Publication year: 2021

Volume: 104

Issue number: 1

Article number: 014011

Publisher: American Physical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/physrevd.104.014011

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/77191

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2102.09993


Abstract

We perform a calculation of the one- and two-point correlation functions of energy density and axial charge deposited in the glasma in the initial stage of a heavy ion collision at finite proper time. We do this by describing the initial stage of heavy ion collisions in terms of freely evolving classical fields whose dynamics obey the linearized Yang-Mills equations. Our approach allows us to systematically resum the contributions of high momentum modes that would make a power series expansion in proper time divergent. We evaluate the field correlators in the McLerran-Venugopalan model using the glasma graph approximation, but our approach for the time dependence can be applied to a general four-point function of the initial color fields. Our results provide analytical insight into the preequilibrium phase of heavy ion collisions without requiring a numerical solution to the Yang-Mills equations.


Keywords: quark-gluon plasma; nuclear physics

Free keywords: quark-gluon plasma; relativistic heavy-ion collisions; nuclear physics


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Preliminary JUFO rating: 2


Last updated on 2021-20-07 at 10:22