Universal properties of cold holographic matter

Understand

We study the collective excitations of holographic quantum liquids formed in the low energy theory living at the intersection of two sets of D-branes.

• The corresponding field theory dual is a supersymmetric Yang-Mills theory with massless matter hypermultiplets in the fundamental representation of the gauge group which generically live on a defect of the unflavored theory.
• Working in the quenched (probe) approximation, we focus on determining the universal properties of these systems.
• We analyze their thermodynamics, the speed of first sound, the diffusion constant, and the speed of zero sound.