Transport in holographic superfluids

Understand

We construct a slowly varying space-time dependent holographic superfluid and compute its transport coefficients.

• Our solution is presented as a series expansion in inverse powers of the charge of the order parameter.
• We find that the shear viscosity associated with the motion of the condensate vanishes.
• The diffusion coefficient of the superfluid is continuous across the phase transition while its third bulk viscosity is found to diverge at the critical temperature.