Resurgence and Hydrodynamics at Strong and Intermediate Coupling
By Benjamin Meiring (Oxford U.)
Friday 15 Mar
Place: Aula 507 (Pere Pascual)
The tremendous success of hydrodynamics in describing the Quark-Gluon Plasma poses many challenges to our understanding of collective phenomena in interacting systems out of equilibrium. Recently the concept of hydrodynamic attractors, which generalise the gradient expansion beyond local thermal equilibrium, has been put forward. In this talk, we will present the first analysis of this configuration at intermediate coupling. Using holography, we resum large orders in the gradient expansion to constrain both the attractor and the dynamics of hydrodynamization beyond the strong coupling limit. We find that independent of the coupling hydrodynamization occurs at early times when the pressure anisotropies are large, and that the attractor is determined by first order hydrodynamics. We further explore the transseries structure of this system which makes such an analysis possible.