Elastic properties of nuclear pasta in neutron-star crusts
Nuclear Theory
2024-12-02 v1 High Energy Astrophysical Phenomena
Abstract
Based on the relativistic mean field (RMF) model with Thomas-Fermi approximation, we investigate the elastic properties of neutron star matter. The elastic constants are estimated by introducing deformations on the nuclear pasta structures in -equilibrium, where various crystalline configurations are considered in a fully three-dimensional geometry without the Wigner-Seitz approximation. Two scenarios with different symmetry energy slope ( and 89.39 MeV) are examined, where the the elastic constants can vary by ten times. By fitting to the numerical results, we improve the analytic formulae for the elastic properties of nuclear pasta by introducing damping factors.
Keywords
Cite
@article{arxiv.2411.19013,
title = {Elastic properties of nuclear pasta in neutron-star crusts},
author = {Cheng-Jun Xia and Toshiki Maruyama and Nobutoshi Yasutake and Toshitaka Tatsumi and Ying-Xun Zhang},
journal= {arXiv preprint arXiv:2411.19013},
year = {2024}
}