期刊
PHYSICS LETTERS B
卷 798, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physletb.2019.134991
关键词
-
资金
- Deutsche Forschungsgemeinschaft (DFG) [Ei-1037/1]
- Danish National Research Foundation [DNRF:90]
- German Academic Scholarship Foundation
- Perimeter Institute for Theoretical Physics
- DFG under Germany's Excellence Strategy [EXC-2181/1 - 390900948]
- DFG [SFB 1225]
We propose a scenario with string theory in the deep ultraviolet, an intermediate asymptotically safe scaling regime for gravity and matter, and the Standard Model in the infrared. This could provide a new perspective to tackle challenges of the two models: For instance, the gravitational Renormalization Group flow could connect a negative microscopic to a positive macroscopic cosmological constant, potentially rendering string theory on an anti-de Sitter background observationally viable. Further, the unitarity of a string-theoretic ultraviolet completion could be inherited by an asymptotically safe fixed point, despite the presence of higher-order interactions. We discuss necessary conditions on the scale of asymptotic safety and the string scale for our scenario to be viable. As a first test, we explore the weak-gravity conjecture in the context of asymptotically safe gravity. (C) 2019 The Author(s). Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据