Superconductivity from D3/D7: Holographic Pion Superfluid

Understand

We show that a D3/D7 system (at zero quark mass limit) at finite isospin chemical potential goes through a superconductor (superfluid) like phase transition.

• This is similar to a flavored superfluid phase studied in QCD literature, where mesonic operators condensate.
• We have studied the frequency dependent conductivity of the condensate and found a delta function pole in the zero frequency limit.
• This is an example of superconductivity in a string theory context.