Holographic Responses of Fermion Matter

Understand

We consider the $D4-D8-\bar{D8}$ brane system which serves as ultraviolet completion of the Nambu-Jona-Lasinio model, where the only degrees of freedom carrying baryon charge are fermions.

• By turning on chemical potential for this charge one may expect the formation of the Fermi liquid ground state.
• At strong coupling we use the dual holographic description to investigate the responses of the system to small perturbations.
• In the chirally symmetric phase we find that the density dependent part of the heat capacity vanishes linearly with temperature.