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Statut |
Confirmé |
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Série |
IPN-X |
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Domaines |
hep-ph |
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Date |
Jeudi 16 Mars 2017 |
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Heure |
11:00 |
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Institut |
CPHT |
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Salle |
Salle de conférences, bât. 6 |
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Nom de l'orateur |
Attems |
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Prenom de l'orateur |
Maximilian |
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Addresse email de l'orateur |
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Institution de l'orateur |
University of Barcelona |
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Titre |
Hydrodynamization and EoSization in non-conformal theories |
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Résumé |
Ever since fast hydrodynamization has been observed in heavy ion collisions
the understanding of the very early non-equilibrium stage of such collisions
has been a topic of intense research. We use the gauge/string duality to model
the creation of a strongly coupled Quark-Gluon plasma in a non-conformal gauge
theory. This numerical relativity study is the first non-conformal holographic
simulation of a heavy ion collision. We extract new physics as compared to the
conformal case such as the non-trivial equation of state and the presence of
a sizeable bulk viscosity. Non-conformality gives rise to an increase of the
relaxation times of the resulting plasma. Furthermore, if the bulk viscosity
is large enough then the plasma becomes well described by hydrodynamics before
the equilibrium equation of state becomes applicable. This time we refer to as
the EoSization time. This EoSization process is a new non-conformal relaxation
channel involving the evolution of energy density and average pressure. It is
exciting to see this new channel for bulk viscosity values well below QCD
critical temperature estimates. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
- 2017-03-16_slides.pdf (7547195 bytes)
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