Loop quantum gravity corrections to gravitational wave dispersion

被引：103
|
作者：
Bojowald, Martin [1 ]
Hossain, Golam Mortuza [1 ]
机构：
[1] Penn State Univ, Inst Gravitat Cosmos, University Pk, PA 16802 USA
来源：
PHYSICAL REVIEW D | 2008年 / 77卷 / 02期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevD.77.023508
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Cosmological tensor perturbations equations are derived for Hamiltonian cosmology based on Ashtekar's formulation of general relativity, including typical quantum gravity effects in the Hamiltonian constraint as they are expected from loop quantum gravity. This translates to corrections of the dispersion relation for gravitational waves. The main application here is the preservation of causality which is shown to be realized due to the absence of anomalies in the effective constraint algebra used.
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页数：14
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