半经典量子引力的可靠性视界：度规涨落通常比反作用更重要
广义相对论与量子宇宙学
2009-10-30 v2 高能物理 - 理论
摘要
在本文中，我引入了半经典量子引力中“可靠性视界”的概念。这一可靠性视界旨在量化我们对半经典量子引力的信任程度，并更好地把握普朗克区域的确切位置。我指出，将半经典量子引力推进到普朗克区域的主要障碍通常是大幅度的度规涨落，而非显著的反作用。在许多情况下，度规涨落在反作用变得显著之前很久就已经变得很大。这类问题对于任何试图从第一性原理证明霍金时序保护猜想的尝试都是根本性的，因为我将证明时序破坏的开始总是隐藏在可靠性视界之后。
引用
@article{arxiv.gr-qc/9702041,
title = {The reliability horizon for semi-classical quantum gravity: Metric fluctuations are often more important than back-reaction},
author = {Matt Visser},
journal= {arXiv preprint arXiv:gr-qc/9702041},
year = {2009}
}
备注
6 pages; ReV_TeX 3.0; two-column format. Revisions: Central definitions and results essentially unchanged. Discussion of the relationship between this letter and the Kay-Radzikowski-Wald singularity theorems greatly extended and clarified. Discussion of reliability horizon near curvature singularities modified. Several references added. Minor typos fixed. Technical TeX modifications