论文标题
宇宙学在存在差异性侵入性的，非动力背景领域
Cosmology in the presence of diffeomorphism-violating, nondynamical background fields
论文作者
论文摘要
我们考虑违反差异性，这是通过重力标准模型扩展（SME）的非动力背景场进行参数化的，并研究了其对宇宙时间演化的影响。我们的目标是确定背景字段配置，这些配置暗示着加速扩展的阶段，而没有异国情调的物质和辐射。尽管我们的方法产生了一系列限制性条件，但遇到了表现出此属性或展示其他有趣行为的配置。我们的文章的发现是最早将中小企业应用于宇宙学环境的发现，它对如何将背景字段纳入宇宙学进化方程及其现象学影响可能是什么。
We consider diffeomorphism violation, which is parameterized by nondynamical background fields of the gravitational Standard-Model Extension (SME), and study its effects on the time evolution of the Universe. Our goal is to identify background field configurations that imply stages of accelerated expansion without exotic forms of matter and radiation present. Although our approach gives rise to a set of restrictive conditions, configurations are encountered that exhibit this property or show other interesting behaviors. The findings of our article, which is among the first to apply the SME to a cosmological setting, provide an initial understanding of how to technically incorporate background fields into the cosmological evolution equations and what their phenomenological impact may be.
