Speaker
Dr
Maximilian Attems
(University of Barcelona)
Description
We use the gauge/gravity duality to model the out-of-equilibrium first stage of a heavy ion collision through the collision of gravitational shockwaves in numerical relativity. This investigation of collisions of sheets of energy density in a non-conformal theory with a gravity dual is the first non-conformal holographic simulation of a heavy ion collision. I will discuss the new physics that arises (as compared to the much simpler conformal case) such as a new plasma relaxation channel, the equilibration of the conformal symmetry breaking scalar condensate and the presence of a sizeable bulk viscosity. These ingredients are crucial to make qualitative contact of the fast hydrodynamization process of hot plasmas with real-world QCD deconfinement matter above the critical point.
Summary
We numerically simulate gravitational shock wave collisions in a holographic model consisting of Einstein gravity coupled to a scalar field with a non-trivial potential.
Authors
Prof.
David Mateos
(University of Barcelona)
Dr
Jorge Casalderrey Solana
(University of Oxford)
Dr
Maximilian Attems
(University of Barcelona)
Dr
Miguel Zilhao
(University of Barcelona)
Mr
Miquel Triana
(University of Barcelona)
