Speaker
Felix Rust
(Max-Planck-Institut für Physik, München)
Description
Using a generalization of the AdS/CFT correspondence, it is possible to determine
thermodynamic properties of strongly coupled field theories. Aiming for a description
of the characteristics of systems such as the quark gluon plasma, we study the
gauge/gravity dual of a finite
temperature field theory at finite isospin chemical potential. Therefore we introduce
a probe of two coincident D7-branes in the AdS-Schwarzschild black hole background.
The isospin chemical
potential is obtained by giving a vev to the time component of the non-Abelian gauge
field on the brane. The gauge/gravity duality allows to obtain SU(2) flavor current
correlators by examining gauge field fluctuations. We discuss the properties of these
correlators which go beyond linear response theory. In particular, we show that the
isospin chemical potential leads to a frequency-dependent isospin diffusion coefficient.
Primary author
Felix Rust
(Max-Planck-Institut für Physik, München)
