Orateur
Alessio Caddeo
(University of Würzburg)
Description
Mott insulators are phases in which strong electron–electron interactions suppress charge transport despite partially filled bands. In terms of single-particle observables, this physics is often associated with zeros of the Green’s function rather than poles. In this talk, I will present a semi-holographic model that exhibits a Mott–metal transition. The setup consists of an elementary fermion coupled to a strongly interacting sector that can be analysed holographically. In our model, the Green’s function of the elementary fermion develops zeros in the Mott phase and poles in the metallic phase. The two regimes are related by a poles/zeros duality that arises naturally within the semi-holographic framework.
