Speaker
Mr
Stephan Steinfurt
(Max-Planck-Institute for Physics, Munich)
Description
We describe the holographic computation of supercharge diffusion constants in theories dual to gravitational theories on the background of AdS black brane solutions (of arbitrary dimension and at vanishing chemical potential for R charges).
The computation is performed via the low frequency, low momentum pole of the correlator of supercurrents, which describes the hydrodynamic "phonino" mode, and via the dual transversal gravitino mode using a Kubo formula.
Furthermore, the connection to a universal absorption cross section result is drawn analogous to the famous proof of the universality of eta / s. Similarities and differences to this result are discussed.
Primary author
Mr
Stephan Steinfurt
(Max-Planck-Institute for Physics, Munich)
