Hunting physics beyond General Relativity with gravitational waves

用引力波寻找广义相对论之外的物理学

• 批准号: 22KF0178
• 负责人: 向山 信治
• 金额: $ 0.9万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22KF0178/
• 关键词: gravitation; cosmology; gravitational waves

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.

我从事黑洞物理的几个方面的工作。我发表了一篇关于违反洛伦兹不变性的理论中非奇异黑洞的方面的论文。在本文中，我们研究了不同的框架，并基于修正的色散关系对可能的几何结构进行了分类。我们演示了我们在之前的一篇文章中介绍的分类的健壮性，该分类展示了它对多指标框架的适用性。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(随后发表)。在这篇文章中，我们澄清了文献中关于不稳定性本质的一些疑问，并展示了这种现象的普遍性。

项目成果

Southern Denmark U(デンマーク)

南丹麦大学（丹麦）

Victoria University of Wellington(ニュージーランド)

惠灵顿维多利亚大学（新西兰）

Johns Hopkins U(米国)

约翰·霍普金斯大学（美国）

Stability of the fundamental quasinormal mode in time-domain observations against small perturbations

• DOI: 10.1103/physrevd.106.084011
• 发表时间: 2022-05
• 期刊: Physical Review D
• 影响因子: 5
• 作者: E. Berti;V. Cardoso;M. Cheung;Francesco Di Filippo;F. Duque;P. Martens;S. Mukohyama

Victoria U(ニュージーランド)

维多利亚大学（新西兰）