Theory Group's Weekly Seminar

Hydrodynamics of a Black Brane in Gauss-Bonnet Massive Gravity

by Dr Mahdi Sadeghi (Tarbiat Modarres University)

Asia/Tehran
Seminar Room (School of Particles and Accelerators)

Seminar Room

School of Particles and Accelerators

Description
I introduce a black brane solution to Gauss-Bonnet massive gravity. In the context of AdS/CFT correspondence, the viscosity to entropy ratio is found by the Green-Kubo formula. The result indicates violation of the well-known KSS bound as expected in a higher derivative theory. Setting mass zero gives back the known viscosity to entropy ratio dependent on the Gauss-Bonnet coupling, while without Gauss-Bonnet term, a nonzero mass parameter doesn’t contribute to the ratio which saturates the bound of 1/(4*\pi).