Unrestricted renormalized mean field theory of strongly correlated electron systems

TL;DR

This paper extends renormalized mean field theory to inhomogeneous states in strongly correlated electron systems, providing insights into high-$T_c$ superconductors' electronic properties and phenomena.

Contribution

It systematically generalizes the theory to include inhomogeneous states with competing orders, addressing complex phenomena in high-$T_c$ superconductors.

Findings

Explains electronic inhomogeneity in high-$T_c$ superconductors

Analyzes superfluid density variations

Provides local electron density of states predictions

Abstract

We generalized systematically the renormalized mean field theory in the case of uniform states to the unrestricted case of general inhomogeneous states with competing spin-, charge- and superconducting orders. Applying the theory to high-$T_c$ superconductors, we discuss the issues of electronic inhomogeneity, the superfluid density, and in particular the local electron density of states. The results account for many intriguing aspects of the phenomenology.