Charged and rotating boson stars in 5-dimensional Einstein-Maxwell(-Chern-Simons) theory
General Relativity and Quantum Cosmology
2023-07-12 v1
Abstract
We study charged and rotating boson stars in 5-dimensional Einstein-Maxwell(-Chern-Simons) theory assuming the two angular momenta associated to the two orthogonal planes of rotation to be equal. Next to the angular momenta, the boson stars carry electric charge and magnetic moment. Interestingly, we find new branches of Einstein-Maxwell-Chern-Simons solutions for which the spatial part of the gauge potential possesses nodes. Consequently, the magnetic moment and the gyromagnetic ratio have opposite sign as compared to the solutions on the main branch. For sufficiently large energy density we find that the solutions possess ergoregions.
Keywords
Cite
@article{arxiv.2304.07736,
title = {Charged and rotating boson stars in 5-dimensional Einstein-Maxwell(-Chern-Simons) theory},
author = {Yves Brihaye and Betti Hartmann},
journal= {arXiv preprint arXiv:2304.07736},
year = {2023}
}
Comments
11 pages including 8 figures