# Influence of electron-hole plasma on Rydberg excitons in cuprous oxide

## TL;DR

This paper presents a many-body theoretical approach to understanding how electron-hole plasma influences Rydberg excitons in cuprous oxide, comparing numerical results with semiclassical models to guide future experiments.

## Contribution

It introduces a comprehensive many-body model for exciton and band edge behavior in electron-hole plasma, offering criteria to validate models with experimental data.

## Key findings

- Numerical analysis of band edge and exciton levels in plasma
- Comparison between self-consistent and semiclassical Debye models
- Criteria for experimental validation of band edge models

## Abstract

We develop a many-body approach to the behavior of exciton bound states and the conduction electron band edge in a surrounding electron-hole plasma with a focus on the absorption spectrum of Rydberg excitons in cuprous oxide. The interplay of band edge and exciton levels is analyzed numerically, whereby the self-consistent solution is compared to the semiclassical Debye approximation. Our results provide criteria which allow to verify or rule out the different band edge models against future experimental data.