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Jun 24 – 28, 2019
US/Eastern timezone
5th International Conference on the Initial Stages in High-Energy Nuclear Collisions

Heavy-quark diffusion coefficient in out-of-equilibrium plasmas

Jun 25, 2019, 4:06 PM
1m
8th floor Theory Center (Pupin)

8th floor Theory Center

Pupin

Poster Initial conditions for hydrodynamics & transport coefficients Posters

Speaker

Dr Jarkko Peuron (European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT*))

Description

We study the heavy-quark momentum diffusion coefficient in gluon plasmas in a self-similar regime using real-time lattice techniques. We observe that the time-evolution of the momentum diffusion coefficient is consistent with a t^(-5/7) power law, as predicted by HTL perturbation theory and self-similarity. Using HTL with our recently acquired data on the spectral function of over-occupied gluodynamics, we find that the main contribution to the diffusion coefficient arises from the longitudinal Landau damping in the spectral function and study further features of the signal. Finding consistent results between lattice simulations and HTL results is an important step forward in understanding the evolution of the diffusion coefficient at initial stages.

Primary authors

Dr Jarkko Peuron (European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT*)) Prof. Tuomas Lappi (University of Jyväskylä) Dr Aleksi Kurkela (CERN) Kirill Boguslavski (Vienna University of Technology)

Presentation materials