English

Weak cosmic censorship with self-interacting scalar and bound on charge to mass ratio

High Energy Physics - Theory 2021-03-17 v1 General Relativity and Quantum Cosmology

Abstract

We study the model of Einstein-Maxwell theory minimally coupling to a massive charged self-interacting scalar field, parameterized by the quartic and hexic coupling, labelled by λ\lambda and β\beta, respectively. In the absence of scalar field, there is a class of counterexamples to cosmic censorship. Moveover, we investigate the properties of full nonlinear solution with nonzero scalar field, and argue that, by assuming massive charged self-interacting scalar field with sufficiently large charge above one certain bound, these counterexamples can be removed. In particular, this bound on charge for self-interacting scalar field is no longer equal to the weak gravity bound for free scalar case. In the quartic case, the bounds are below free scalar case for λ<0\lambda<0, while above free scalar case for λ>0\lambda>0. Meanwhile, in the hexic case, the bounds are above free scalar case for both β>0\beta>0 and β<0\beta<0.

Keywords

Cite

@article{arxiv.2008.02513,
  title  = {Weak cosmic censorship with self-interacting scalar and bound on charge to mass ratio},
  author = {Yan Song and Tong-Tong Hu and Yong-Qiang Wang},
  journal= {arXiv preprint arXiv:2008.02513},
  year   = {2021}
}

Comments

19 pages, 7 figures