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


JYU authors or editors


Publication details

All authors or editorsGuerrero-Rodríguez, Pablo; Lappi, Tuomas

Journal or seriesPhysical Review D

ISSN2470-0010

eISSN2470-0029

Publication year2021

Publication date16/07/2021

Volume104

Issue number1

Article number014011

PublisherAmerican Physical Society

Publication countryUnited States

Publication languageEnglish

DOIhttps://doi.org/10.1103/physrevd.104.014011

Publication open accessOpenly available

Publication channel open accessPartially 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.


Keywordsquark-gluon plasmanuclear physics

Free keywordsquark-gluon plasma; relativistic heavy-ion collisions; nuclear physics


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Ministry reportingYes

Reporting Year2021

JUFO rating2


Last updated on 2024-25-03 at 08:55