Jul 20 – 27, 2011
Alpes Congrès - Alpexpo
Europe/Paris timezone

Phenomenology of irreversible processes from gravity

Jul 23, 2011, 9:45 AM
Lesdiguières (Alpes Congrès - Alpexpo)


Alpes Congrès - Alpexpo


Dr Ayan Mukhopadhyay (LPTHE, University of Paris VI, France)


We argue, using inputs from both field theory and gravity, that all non-equilibrium phenomena holographically dual to solutions of pure gravity, are determined completely by a closed set of equations of motion of the energy-momentum tensor. These phenomenological equations include energy-momentum conservation, but additional equations for evolution of the shear-stress tensor also. A class of solutions is purely hydrodynamic. These equations should capture all asymptotically AdS solutions of pure gravity with regular future horizons for the right values of phenomenological coefficients, like the shear viscosity. We prove this for homogeneous relaxation explicitly. This also provides us new analytical means of systematically studying the transition to the hydrodynamic regime in boost invariant flows.

Primary author

Dr Ayan Mukhopadhyay (LPTHE, University of Paris VI, France)


Ramakrishnan Iyer (Department of Physics and Astronomy, University of Southern California, USA)

Presentation materials