Destabilization of Black Holes and Stars by Generalized Proca Fields.
Destabilization of Black Holes and Stars by Generalized Proca Fields.
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DOI：
10.1103/physrevlett.127.131104
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发表时间：
2021-04
影响因子：
8.6
通讯作者：
S. Garcia-Saenz;A. Held;Jun Zhang
中科院分区：
文献类型：
--
作者：
S. Garcia-Saenz;A. Held;Jun Zhang
我们证明了广义相对论中的黑洞和恒星可以通过非最小耦合向量场的扰动而不稳定。聚焦于静态和球对称的背景，我们的分析表明，黑洞与足够小的质量和足够高的密度的恒星受到鬼或梯度型不稳定性。这适用于一大类具有非最小耦合的爱因斯坦-普罗卡理论，包括广义普罗卡模型，这些模型因其在宇宙学和天体物理学中的潜在作用而引起人们的关注。稳定性标准转化为暗能量和超轻暗物质场景的低尺度理论的相关界限。
We demonstrate that black holes and stars in general relativity can be destabilized by perturbations of nonminimally coupled vector fields. Focusing on static and spherically symmetric backgrounds, our analysis shows that black holes with sufficiently small mass and stars with sufficiently high densities are subject to ghost- or gradient-type instabilities. This holds for a large class of Einstein-Proca theories with nonminimal couplings, including generalized Proca models that have sparked attention for their potential role in cosmology and astrophysics. The stability criteria translate into bounds of relevance for low-scale theories of dark energy and for ultralight dark matter scenarios.