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General Relativity and Quantum Cosmology

arXiv:2510.13988 (gr-qc)
[Submitted on 15 Oct 2025]

Title:Boson Stars in $D \ge 4$ Dimensions: Stability, Oscillation Frequencies, and Dynamical Evolutions

Authors:Gareth Arturo Marks, Abdullah Al Zaif
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Abstract:We construct spherically symmetric boson star solutions in $D \in \{4,5,6\}$ spacetime dimensions, considering the effects of both a quartic self-interaction term and a solitonic potential. We then perform a perturbative analysis, generalizing the pulsation equations to arbitrary dimension and potential and hence demonstrating the existence of radially stable higher-dimensional boson star solutions. We supplement these linear results with perturbed and unperturbed nonlinear dynamical evolutions in spherical symmetry, obtained using a dimensional reduction that allows us to evolve spacetimes with any number of background dimensions using the same numerical framework, while preserving the full gauge freedom of standard approaches to numerical relativity. The results of these evolutions indicate that the solutions we identify as perturbatively stable are indeed generally stable to nonlinear spherical dynamics.
Comments: 23 pages, 14 figures
Subjects: General Relativity and Quantum Cosmology (gr-qc)
Cite as: arXiv:2510.13988 [gr-qc]
  (or arXiv:2510.13988v1 [gr-qc] for this version)
  https://doi.org/10.48550/arXiv.2510.13988

Submission history

From: Gareth Marks [view email]
[v1] Wed, 15 Oct 2025 18:11:22 UTC (2,340 KB)
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