Implications of a positive cosmological constant for general relativity

被引：35

作者：

Ashtekar, Abhay ^{[1
,2
,3
]}

机构：

[1] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

[2] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[3] Aix Marseille Univ, CNRS, CPT, F-13288 Marseille, France

来源：

REPORTS ON PROGRESS IN PHYSICS | 2017年 / 80卷 / 10期

基金：

美国国家科学基金会;

关键词：

cosmological constant; general relativity; gravitational waves; black holes; Hawking effect; GRAVITATIONAL-WAVES; ISOLATED HORIZONS; SUPERNOVAE; LAMBDA; FIELDS; MASS;

D O I：

10.1088/1361-6633/aa7bb1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Most of the literature on general relativity over the last century assumes that the cosmological constant Lambda is zero. However, by now independent observations have led to a consensus that the dynamics of the universe is best described by Einstein's equations with a small but positive Lambda. Interestingly, this requires a drastic revision of conceptual frameworks commonly used in general relativity, no matter how small Lambda is. We first explain why, and then summarize the current status of generalizations of these frameworks to include a positive Lambda, focusing on gravitational waves.

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页数：8

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