English

Bardeen spacetime with charged scalar field

General Relativity and Quantum Cosmology 2024-07-17 v1 High Energy Physics - Theory

Abstract

Recently, Ref. \cite{Wang:2023tdz} investigated the model of Einstein-Bardeen theory coupled to a free complex scalar field. The introduction of the scalar field prevents the formation of the event horizon, and when the magnetic charge exceeds a certain critical value, the frozen Bardeen-boson star can be obtained with the frequency ω0\omega \rightarrow 0. In this paper, we extend the investigation of the Einstein-Bardeen model with a charged scalar field and obtain two types of solutions: the small qq solution and the large qq solution. Specifically, for the small qq solution, we find that there exists a maximum value for the charge qq, the introduction of the charge makes it possible to obtain solutions for frozen stars without the frequency to be approached to zero. For the large qq solution, the charge can tend toward infinity, and as qq \rightarrow \infty, the large qq solution gradually becomes the pure Bardeen solution. Similar to Ref. \cite{Wang:2023tdz}, the event horizon is not found in our results.

Cite

@article{arxiv.2407.11355,
  title  = {Bardeen spacetime with charged scalar field},
  author = {Long-Xing Huang and Shi-Xian Sun and Yong-Qiang Wang},
  journal= {arXiv preprint arXiv:2407.11355},
  year   = {2024}
}

Comments

20 pages, 6 figures

R2 v1 2026-06-28T17:42:28.559Z