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arXiv 0907.5160gr-qc
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圈量子宇宙学简介

A Brief Introduction to Loop Quantum Cosmology

Guillermo A. Mena Marugan

摘要:

近年来,圈量子引力已经成为广义相对论非微扰量子理论的一个坚实的候选者。它是一个背景独立的理论,基于对引力场的完整性和通量的描述。为了讨论它的物理意义,人们把大量的注意力放在了圈量子引力的量子化技术在对称约化模型中的应用上,这种研究被称为圈量子宇宙学。我们总结了它的基本原理和主要的差异,在宇宙学中采用的更传统的量子化方法,直到现在。此外,我们评论的最重要的结果,已获得圈量子宇宙学通过分析简单的均匀和各向同性模型。这些结果包括经典大爆炸奇点的分辨率,它被量子反弹所取代。

英文摘要:

In recent years, Loop Quantum Gravity has emerged as a solid candidate for a nonperturbative quantum theory of General Relativity. It is a background independent theory based on a description of the gravitational field in terms of holonomies and fluxes. In order to discuss its physical implications, a lot of attention has been paid to the application of the quantization techniques of Loop Quantum Gravity to symmetry reduced models with cosmological solutions, a line of research that has been called Loop Quantum Cosmology. We summarize its fundamentals and the main differences with respect to the more conventional quantization approaches employed in cosmology until now. In addition, we comment on the most important results that have been obtained in Loop Quantum Cosmology by analyzing simple homogeneous and isotropic models. These results include the resolution of the classical big-bang singularity, which is replaced by a quantum bounce.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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