Strong Coupling Theory of Superconductivity and Ferroelectric Quantum Criticality in metallic SrTiO${}_3$

Sudip Kumar Saha, Maria N. Gastiasoro, Jonathan Ruhman +1

Superconductivity in doped SrTiO${}_3$ has remained an enduring mystery for over 50 years. The material's status as a ``quantum" ferroelectric metal, characterized by a soft polar mo…