论文标题
宇宙学的新动作
A New Action for Cosmology
论文作者
论文摘要
我们提出了一项新的动作，该动作重现了Friedmann-Lemaitre-Robertson-Walker（FLRW）和Bianchi模型中的一般相对性的宇宙学部门。该动作没有提及规模因素，是由Herglotz首先检查的摩擦类型。我们证明，这种动作的极端化重现了物理可观察物的通常动力学，而这种动作的符合性是爱因斯坦 - 希尔伯特（Einstein-Hilbert）的宇宙学模型作用。最后，我们讨论了通过考虑消除量表导致的物理本体减少而产生的一些增加的解释能力。
We present a new action which reproduces the cosmological sector of general relativity in both the Friedmann-Lemaitre-Robertson-Walker (FLRW) and Bianchi models. This action makes no reference to the scale factor, and is of a frictional type first examined by Herglotz. We demonstrate that the extremization of this action reproduces the usual dynamics of physical observables, and the symplectification of this action is the Einstein-Hilbert action for cosmological models. We end by discussing some of the increased explanatory power produced by considering the reduced physical ontology resulting from eliminating scale.
