Quantum cosmology from quantum gravity condensates: cosmological variables and lattice-refined dynamics

Quantum cosmology from quantum gravity condensates: cosmological variables and lattice-refined dynamics
复制标题

来自量子引力凝聚的量子宇宙学:宇宙学变量和晶格细化动力学

DOI:
--
复制
发表时间:
2014
期刊:
影响因子:
--
通讯作者:
D. Oriti
D. Oriti
中科院分区:
--
文献类型:
--
作者:
Steffen Gielen;D. Oriti

文献摘要

参考文献

被引文献

相似文献

在群场论凝聚态宇宙学的背景下,我们阐明了从微观量子引力自由度中提取宇宙学变量。我们表明,第二量子化形式主义的一个重要含义是依赖于量子引力原子数N(自旋网络顶点/基本单形数)的宇宙变量和方程。我们澄清了有效的宇宙方程与圈量子宇宙学的关系,理解为一个更基本的量子引力理论的有效(流体力学)近似。通过这样做,我们提供了一个基本的基础,晶格细化的想法,显示的有效宇宙学连接N的依赖性,因此间接的比例因子。我们的结果为探索有效的宇宙动力学开辟了一个新的竞技场,因为这在很大程度上取决于新的可观测N,它完全是量子引力的起源。
In the context of group field theory condensate cosmology, we clarify the extraction of cosmological variables from the microscopic quantum gravity degrees of freedom. We show that an important implication of the second quantized formalism is the dependence of cosmological variables and equations on the quantum gravitational atomic number N (number of spin network vertices/elementary simplices). We clarify the relation of the effective cosmological equations with loop quantum cosmology, understood as an effective (hydrodynamic-like) approximation of a more fundamental quantum gravity theory. By doing so, we provide a fundamental basis to the idea of lattice refinement, showing the dependence of the effective cosmological connection on N, and hence indirectly on the scale factor. Our results open a new arena for exploring effective cosmological dynamics, as this depends crucially on the new observable N, which is entirely of quantum gravitational origin.
DOI: 10.1103/physrevlett.112.241101
发表时间: 2014-06-19
影响因子: 8.6
作者:
Ade, P. A. R.;Aikin, R. W.;Yoon, K. W.
通讯作者: Yoon, K. W.