论文标题
渐近安全重力的奇异性和现象学方面
Singularities and Phenomenological aspects of Asymptotic Safe Gravity
论文作者
论文摘要
量子重力的渐近安全性（AS）程序与一般相对论保持相同的领域和对称性，并研究了相关的重力作用，这是在功能恢复范围（RG）技术的帮助下，作为非扰动级别的完整理论的基本部分。可以测试新的AS方法观点的重要现象学任务是发现RG改善了宇宙学和黑洞。在这项工作中，我们分析了最近发现的非符号对称和非界面宇宙学解决方案的特性。此外，我们以AS的精神得出了一组新型的一致的爱因斯坦田地方程组，该方程尊重Bianchi身份。这组新的方程式扩展了先前发布的改良的爱因斯坦方程，通过在动作中添加适当的协变量术语而产生。
Asymptotic Safety (AS) Program for quantum gravity keeps the same fields and symmetries with General Relativity and studies the associated gravitational action as a fundamental part of the complete theory at the nonperturbative level with the help of functional renormalization group (RG) techniques. An important phenomenological task that can test the new point of view of AS approach is the discovery of RG improved cosmologies and black holes. In this work, we analyze the properties of recently found non-singular spherically symmetric and non-singular cosmological solutions. Furthermore, we derive a novel consistent set of modified Einstein field equations, in the spirit of AS, which respects the Bianchi identities. This new set of equations extend previously published modified Einstein equations which arise by adding appropriate covariant kinetic terms to the action.
