Patterns of Lepton-Flavour Violation Motivated by Decoupling and Sneutrino Inflation
Patterns of Lepton-Flavour Violation Motivated by Decoupling and Sneutrino Inflation
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解耦和中微子膨胀引起的轻子味破坏模式
DOI：
10.1016/j.nuclphysb.2004.05.001
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
K. Turzyński
中科院分区：
文献类型：
--
作者：
P. Chankowski;J. Ellis;S. Pokorski;M. Raidal;K. Turzyński
宇宙学常数问题通常被认为是任何有效理论的一个不可避免的特征，它捕捉了经过检验的引力和物质物理学，而不考虑短距离引力耦合的细节。在本文中，一个微妙的有效的描述，避免了这个问题，在第一个量化的语言，符合实验和等价原则。首先，量子化允许通过切割粒子世界线的适当长度来切割出最小的有效域。在（局部的）欧几里得时空中工作可以促进这一点，尽管对么正性的考虑仍然通过洛伦兹时空的解析延拓来解决。新的有效描述表明，宇宙学常数问题对引力的短距离细节很敏感，这可以通过实验来探测。“胖重力”玩具模型，说明如何重力可能关闭在短，但可测试的距离，在一般协变的方式，抑制宇宙常数。本文改进了以前的工作，允许推广到无质量的物质，非平凡的自旋，非微扰现象，和多（亚稳）真空。
The cosmological constant problem is usually considered an inevitable feature of any effective theory capturing well-tested gravitational and matter physics, without regard to the details of short-distance gravitational couplings. In this paper, a subtle effective description avoiding the problem is presented in a first quantized language, consistent with experiments and the Equivalence Principle. First quantization allows a minimal domain of validity to be carved out by cutting on the proper length of particle worldlines. This is facilitated by working in (locally) Euclidean spacetime, although considerations of unitarity are still addressed by analytic continuation from Lorentzian spacetime. The new effective description demonstrates that the cosmological constant problem is sensitive to short-distance details of gravity, which can be probed experimentally. “Fat Gravity” toy models are presented, illustrating how gravity might shut off at short but testable distances, in a generally covariant manner that suppresses the cosmological constant. This paper improves on previous work by allowing generalizations to massless matter, non-trivial spins, non-perturbative phenomena, and multiple (metastable) vacua.
影响因子：
8.7
作者：
Bennett, CL;Halpern, M;Weiland, JL
通讯作者：
Weiland, JL