Cosmological effective Hamiltonian from full loop quantum gravity dynamics

被引：83
|
作者：
Dapor, Andrea [1 ]
Liegener, Klaus [1 ]
机构：
[1] Friedrich Alexander Univ Erlangen Nurnberg, Inst Quantum Grav, Staudstr 7, D-91058 Erlangen, Germany
来源：
PHYSICS LETTERS B | 2018年 / 785卷
关键词：
GENERAL-RELATIVITY; COHERENT STATES;
D O I：
10.1016/j.physletb.2018.09.005
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The concept of effective dynamics has proven successful in LQC, aloop-inspired quantization of cosmological spacetimes. We apply the same idea of its derivation in LQC to the full theory, by computing the expectation value of the scalar constraint with respect to some coherent states peaked on the phase-space variables of flat Robertson-Walker spacetime. We comment on the relation with effective LQC and find a deviation stemming from the Lorentzian part of the Hamiltonian. (C) 2018 The Author(s). Published by Elsevier B.V.
引用
收藏
页码：506 / 510
页数：5
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