Hunting physics beyond General Relativity with gravitational waves

我研究了黑洞物理学的几个方面。我发表了一篇论文是关于违反洛伦兹不变性理论中的非奇异黑洞。本文研究了不同的框架，并基于修正色散关系对可能的几何形状进行了分类。我们展示了我们在前一篇文章中介绍的分类的鲁棒性，展示了它对多度量框架的适用性。我们的结果有助于理解在违反洛伦兹引力下的测地线完全黑洞解及其对非奇异解的潜在影响。在此期间，我还在arXiv上上传了一篇关于非奇异黑洞内视界不稳定性的论文（后来发表了）。在本文中，我们澄清了目前文献中关于不稳定性性质的一些疑问，并表明了这种现象的普遍性。

I worked on several aspects of black holes physics.I published one paper regarding aspects of nonsingular black holes in theories that violate Lorentz invariance. In this paper, we studied different frameworks and classified the possible geometries based on modified dispersion relations. We demonstrated the robustness of a classification that we introduced in a previous paper showing its applicability to multi-metric frameworks. Our results contribute to understanding geodesically complete black hole solutions in Lorentz-violating gravity and their potential implications for non-singular solutions.In that period, I also uploaded on arXiv (and published afterward) a paper on the instability of the inner horizon of non-singular black holes. In this paper, we clarify some of the doubts present in the literature about the nature of the instability and we show the universality of the phenomenon.