English

Strange Quark Stars and Condensate Dark Stars in Bumblebee Gravity

General Relativity and Quantum Cosmology 2025-05-15 v2 Solar and Stellar Astrophysics

Abstract

In this paper, we investigate the properties of relativistic stars made of isotropic matter within the framework of the minimal Standard Model Extension, where a Bumblebee field (BF) coupled to spacetime induces spontaneous Lorentz symmetry breaking. We adopt analytic equations-of-state describing either condensate dark stars or strange quark stars. We solve the structure equations numerically, and we compute the mass-to-radius relationships. The influence of the Bumblebee parameter l\mathbf{l} is examined in detail, and an upper bound is obtained using the massive pulsar (PSR) J0740+6620 and the strangely light High Energy Stereoscopic System (HESS) J1731-347 compact object.

Keywords

Cite

@article{arxiv.2409.05801,
  title  = {Strange Quark Stars and Condensate Dark Stars in Bumblebee Gravity},
  author = {Grigoris Panotopoulos and Ali Övgün},
  journal= {arXiv preprint arXiv:2409.05801},
  year   = {2025}
}

Comments

Revised version, to appear in NPB