Heavy-Quark Momentum Broadening in a Non-Abelian Plasma away from Thermal Equilibrium

We perform classical-statistical real-time lattice simulations to compute real-time spectral functions and momentum broadening of quarks in the presence of strongly populated non-Abelian gauge fields. Based on a novel methodology to extract the momentum broadening for relativistic quarks, we find th...

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Bibliographic Details
Published inPhysical review letters Vol. 132; no. 22; p. 222301
Main Authors Pandey, Harshit, Schlichting, Sören, Sharma, Sayantan
Format Journal Article
LanguageEnglish
Published United States 31.05.2024
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Summary:We perform classical-statistical real-time lattice simulations to compute real-time spectral functions and momentum broadening of quarks in the presence of strongly populated non-Abelian gauge fields. Based on a novel methodology to extract the momentum broadening for relativistic quarks, we find that the momentum distribution of quarks exhibit interesting nonperturbative features as a function of time due to correlated momentum kicks it receives from the medium, eventually going over to a diffusive regime. We extract the momentum diffusion coefficient for a mass range describing charm and bottom quarks and find sizable discrepancies from the heavy-quark limit.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.132.222301