Speaker
David Rodríguez
Description
We derive relations between viscosities and momentum
conductivity in 2 + 1 dimensions by finding a generalization
of holographic Ward identities for the energy-momentum
tensor. The generalization is novel in the sense that it
goes beyond the usual identities obtained from holographic
renormalization. Our results are consistent with previous
field theory analysis. The main tools we use are a constant
‘probability current’ in the gravity dual, that we are able
to define for any system of linear ODEs, and parity symmetry.
