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Non-perturbative properties of evolving gluonic plasmas

Speaker: 
Kirill Boguslavski
Start date: 
Thursday, 14 May, 2020 - 14:00 to 15:00
Location: 
WEBINAR on Google Meets
Abstract: 
During ultrarelativistic heavy-ion collisions a quark-gluon plasma (QGP) is created. Its pre-equilibrium evolution includes a rich variety of exciting phenomena of Quantum Chromodynamics (QCD). We will focus on the regime of this evolution when gluonic occupation numbers are large, which can be achieved in the high energy (weak coupling) limit. Here a dual description in terms of real-time lattice simulations (of classical fields) and perturbative techniques like kinetic theory or the hard loop framework is applicable. This provides a unique opportunity to directly compare non-perturbative lattice simulations and perturbative methods, allowing to assess to what extent perturbative methods capture the non-equilibrium dynamics of the plasma. This strategy has been crucial in the development of our current understanding of the thermalization dynamics with weak-coupling techniques. In this talk, I will focus on some recently found and examined far-from-equilibrium properties, which involve classical attractors and universality classes, spectral functions, non-perturbative dynamics at low momenta and heavy-quark diffusion out of equilibrium. ********************************************************************************************************************************************************************* Kirill Boguslavski short bio: Kirill Boguslavski is an assistant professor at the Vienna University of Technology since 2019. He completed his PhD in Heidelberg in 2016, and he was a postodoc at the University of Jyväskylä between 2016 and 2019. His research interests are the dynamics of field theories far from thermal equilibrium, especially their universal properties and phenomenological applications. ********************************************************************************************************************************************************************* “Pursuant to art. 13 of EU Regulation No.2016/679 – General Data Protection Regulation and as detailed in the PrivacyPolicy for FBK event’s participants, we inform you that the event will berecorded and disclosed on the FBK institutional channels. In order not to befilmed or recorded, you can disable the webcam and/or mute the microphone.“