Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-04-13
Physics
High Energy Physics
High Energy Physics - Theory
4 pages, 1 figure; Ref. [7] has been updated
Scientific paper
We prove, using the AdS/CFT correspondence, that the long wavelength dynamics of the shear stress tensor in a strongly coupled N=4 SYM plasma is not described by the relaxation-type, fluid dynamical equations proposed by Israel and Stewart: the coarse grained dynamics will necessarily contain a second-order comoving derivative of the shear stress tensor. We argue that this should be true for any strongly-coupled gauge theory with a gravity dual. If the QGP formed in heavy ion collisions can indeed be described in terms of a (yet unknown) theory of gravity in higher dimensions, the equations of motion used in hydrodynamical simulations of the QGP must necessarily include second order comoving derivatives of the shear stress tensor.
Denicol Gabriel S.
Noronha Jorge
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