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arXiv 1302.6566gr-qcastro-ph.COhep-th
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高分子量子物质的奇异性分辨

Singularity resolution from polymer quantum matter

Andreas Kreienbuehl, Tomasz Pawlowski

摘要:

我们研究聚合的量子物质场的性质使用的例子的Friedmann-Lemaitre-Robertson-Walker宇宙起源的最小耦合无质量标量场。该模型被视为对称约化制度通过deparametrization技术,与比例因子发挥作用的时间。随后,对应于物质的剩余动态自由度被聚合物量子化。对由此产生的真正的量子动力学的分析表明,大爆炸奇点被解决了,尽管解决的形式与物质钟模型中的解决形式有很大的不同:动力学上,奇点是可以通过的,而不是可以避免的。此外,这种分析暴露了所谓的有效动态圈内量子宇宙学在最基本的各向同性设置之外应用时的关键限制。

英文摘要:

We study the polymeric nature of quantum matter fields using the example of a Friedmann-Lemaitre-Robertson-Walker universe sourced by a minimally coupled massless scalar field. The model is treated in the symmetry reduced regime via deparametrization techniques, with the scale factor playing the role of time. Subsequently, the remaining dynamic degrees of freedom corresponding to the matter are polymer quantized. The analysis of the resulting genuine quantum dynamic shows that the big bang singularity is resolved, although with the form of the resolution differing significantly from that in the models with matter clocks: dynamically, the singularity is made passable rather than avoided. Furthermore, this analysis exposes crucial limitations to the so-called effective dynamic in loop quantum cosmology when applied outside of the most basic isotropic settings.

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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