تقرير
Gravitational mode mixing around black holes in scalar-tensor theories with parity-violating terms
| العنوان: | Gravitational mode mixing around black holes in scalar-tensor theories with parity-violating terms |
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| المؤلفون: | Hirano, Shin'ichi, Kimura, Masashi, Yamaguchi, Masahide |
| سنة النشر: | 2024 |
| المجموعة: | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology, High Energy Physics - Theory |
| الوصف: | We investigate black holes and gravitational perturbations when both the scalar Gauss-Bonnet and dynamical Chern-Simons gravity sectors coexist in addition to the Einstein-Hilbert term, and both sectors are coupled to a single canonically normalized scalar field. The presence of the scalar Gauss-Bonnet gravity sector allows the scalar field to possess a non-vanishing background solution, resulting in additional couplings between odd and even-type gravitational perturbations arising from the dynamical Chern-Simons gravity sector. We illustrate the impact of these even-odd gravitational couplings in gravitational perturbations around a static spherically symmetric black hole. Although the couplings between the odd and even-type gravitational perturbations are known to appear in purely tensorial gravity theories with higher curvature corrections, we demonstrate it in scalar-tensor theories. Comment: v2: minor revisions, accepted for publication in Phys. Rev. D. 33 pages, 2 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2404.07039 |
| رقم الأكسشن: | edsarx.2404.07039 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |