# Setting nonperturbative uncertainties on finite-temperature properties of neutron matter

## TL;DR

This paper develops a comprehensive error band for finite-temperature neutron matter properties, accounting for uncertainties in nuclear interactions, many-body methods, and thermodynamic consistency, advancing first-principles constraints on the nuclear matter equation of state.

## Contribution

It introduces a nonperturbative approach with uncertainty quantification for finite-temperature neutron matter using chiral interactions.

## Key findings

- Provides an error band encompassing various uncertainties.
- Offers nonperturbative predictions for finite-temperature neutron matter.
- Establishes a first step towards first-principles constraints on thermal nuclear matter.

## Abstract

We present an error band on neutron matter properties at finite temperature (finite-T) which comprehends uncertainties on the nuclear interaction, the many-body method convergence, and the thermodynamical consistency of the approach. This study provides nonperturbative predictions for finite-T neutron matter employing chiral interactions which are selected on the basis of their performance in both finite nuclei and infinite matter at zero temperature. Since proper theoretical uncertainties at finite-T are still generally lacking, the band provided here represents a first step towards setting first-principles constraints on thermal aspects of the nuclear matter equation of state.