Orateur
Jonas Rongen
(University of Genoa)
Description
In this talk, I address the question of how hydrodynamics can be extended to incorporate non-hydrodynamic excitations. To this end, I consider the construction of an effective linear-response theory that reproduces the Mittag–Leffler expansion of a charge current correlator with an arbitrary number of simple poles. The resulting framework is compatible with hydrostatics and does not require any modification of equilibrium thermodynamics. As an application, I study charge fluctuations in the D3/D5 probe brane system and quantify how transport coefficients evolve as quasihydrodynamic behavior emerges at large charge density.
