Projected SO(5) Models

TL;DR

This paper introduces a class of projected SO(5) models that enforce no-double-occupancy constraints exactly, capturing the phase diagram and physical properties of high-temperature superconductors with exact symmetry in static correlations.

Contribution

The paper develops projected SO(5) models with exact Gutzwiller constraints and symmetry, providing a realistic framework for high T_c superconductor physics.

Findings

Models reproduce the global phase diagram of high T_c superconductors

Static correlation functions exhibit exact SO(5) symmetry

Models account for key physical properties of high T_c materials

Abstract

We construct a class of projected SO(5) models where the Gutzwiller constraint of no-double-occupancy is implemented exactly. We introduce the concept of projected SO(5) symmetry where all static correlation functions are exactly SO(5) symmetric and discuss the signature of the projected SO(5) symmetry in dynamical correlation functions. We show that this class of projected SO(5) models can give a realistic description of the global phase diagram of the high T_c superconductors and account for many of their physical properties.