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arXiv · 2409.04805

Neutron stars in the bumblebee theory of gravity

Peixiang Ji·Zhuhai Li·Lirui Yang·Rui Xu·Zexin Hu·Lijing Shao
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Abstract

Recently, theoretical studies on the bumblebee gravity model, a nonminimally-coupled vector-tensor theory that violates the Lorentz symmetry, have flourished, with a simultaneous increase in the utilization of observations to impose constraints. The static spherical solutions of neutron stars (NSs) in the bumblebee theory are calculated comprehensively in this work. These solutions with different coupling constants reveal a rich theoretical landscape for NSs, including vectorized NSs and NSs with finite radii but divergent masses. With these solutions, preliminary constraints on the asymptotic vector field values are obtained through restrictions on the stellar radius.

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Peixiang Ji, Zhuhai Li, Lirui Yang, Rui Xu, Zexin Hu, Lijing Shao. 2024-09-07. Neutron stars in the bumblebee theory of gravity. https://doi.org/10.1103/physrevd.110.104057

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