Effects of the Symmetry energy slope on the exotic content of the neutron stars
Abstract
By varying the symmetry energy slope (L), I investigate how the exotic content within the interiors of neutron stars changes and how it affects both macroscopic and microscopic quantities. Using two different parametrizations (L3ωρ and BigApple), and three different possibilities about the neutron star core (nucleons+hyperons, nucleons+deltas, nucleons+hyperons+deltas), I show that, for the models analyzed in this work, changing the slope barely changes the amount of hyperons, but it can strongly suppress the Δ resonances for large values of L. I also show that, in general, the presence of exotic content will be more evident for lower values of L than for large ones. Differences and similarities between the two parametrizations are also analyzed.
Versions
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BibTeX
@misc{lopes2026effects,
title = {{Effects of the Symmetry energy slope on the exotic content of the neutron stars}},
author = {Luiz L. Lopes},
howpublished = {arXiv},
year = {2026},
month = may,
doi = {10.48550/arxiv.2605.30554},
eprint = {2605.30554},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.30554},
}
RIS
TY - UNPB
TI - Effects of the Symmetry energy slope on the exotic content of the neutron stars
AU - Luiz L. Lopes
PY - 2026
DA - 2026/05/28
PB - arXiv
DO - 10.48550/arxiv.2605.30554
UR - https://arxiv.org/abs/2605.30554
AB - By varying the symmetry energy slope (L), I investigate how the exotic content within the interiors of neutron stars changes and how it affects both macroscopic and microscopic quantities. Using two different parametrizations (L3ωρ and BigApple), and three different possibilities about the neutron star core (nucleons+hyperons, nucleons+deltas, nucleons+hyperons+deltas), I show that, for the models analyzed in this work, changing the slope barely changes the amount of hyperons, but it can strongly suppress the Δ resonances for large values of L. I also show that, in general, the presence of exotic content will be more evident for lower values of L than for large ones. Differences and similarities between the two parametrizations are also analyzed.
ER -