Low-Energy Electronic Excitations of the Layered Cuprates and the Hubbard Model

TL;DR

This paper reviews Quantum Monte Carlo findings on magnetic, charge, and pairing excitations in the 2D Hubbard model, shedding light on low-energy phenomena relevant to high-temperature superconducting cuprates.

Contribution

It compiles and analyzes Quantum Monte Carlo results to elucidate the relationships among various excitations in the Hubbard model near half-filling.

Findings

Magnetic and charge excitations are closely linked in the metallic state.

Pairing correlations suggest potential mechanisms for superconductivity.

Results enhance understanding of low-energy excitations in cuprate superconductors.

Abstract

We present a review of the Quantum Monte Carlo results on the magnetic, charge and single-particle excitations as well as the pairing correlations of the two-dimensional Hubbard model. We are particularly interested in how these quantities are related to each other in the metallic state that forms near half-filling. These results are helpful in gaining a better understanding of the low energy excitations of the superconducting cuprates.