Quantum many-body effects on Rydberg excitons in cuprous oxide

TL;DR

This paper explores how quantum many-body interactions influence Rydberg excitons in cuprous oxide, focusing on plasma-induced effects like line shifts, widths, and oscillator strength changes through detailed Hamiltonian analysis.

Contribution

It introduces a comprehensive Hamiltonian diagonalization approach to analyze plasma effects on Rydberg excitons, advancing beyond simple perturbation methods.

Findings

Line shifts and widths are quantitatively calculated.

Oscillator strength of exciton lines is analyzed.

Full diagonalization provides detailed insight into plasma effects.

Abstract

We investigate quantum many-body effects on Rydberg excitons in cuprous oxide induced by the surrounding electron-hole plasma. Line shifts and widths are calculated by full diagonalisation of the plasma Hamiltonian and compared to results in first order perturbation theory, and the oscillator strength of the exciton lines is analysed.