# Hyperons and quarks in proto-neutron stars

## TL;DR

This paper investigates the influence of hyperons and quarks on the structure of proto-neutron stars, considering finite temperature, lepton fraction, and rotation effects using advanced nuclear matter models.

## Contribution

It introduces a comprehensive analysis of hyperons and quarks in proto-neutron stars using the CMF model under realistic conditions, including phase mixtures and rotation.

## Key findings

- Hyperons and quarks significantly affect stellar structure.
- Finite temperature and lepton fraction alter matter composition.
- Rotation impacts the stability and phase distribution.

## Abstract

In this work, we study matter in the cores of proto-neutron stars, focusing on the impact of their composition on the stellar structure. We begin by examining the effects of finite temperature (through a fixed entropy per baryon) and lepton fraction on purely nucleonic matter by making use of the DSH model . We then turn our attention to a relativistic mean-field model containing exotic degrees of freedom, the Chiral Mean Field (CMF) model, again, under the conditions of finite temperature and trapped neutrinos. In the latter, since both hyperons and quarks are found in the cores of large-mass stars, their interplay and the possibility of mixtures of phases is taken into account and analyzed. Finally, we discuss how stellar rotation can affect our results.