论文标题
非局部重力的局部极限:一般相对性的远程延伸
Local Limit of Nonlocal Gravity: A Teleparallel Extension of General Relativity
论文作者
论文摘要
我们描述了一个一般的构成框架,用于对相对论一般理论的触发行为扩展。这种方法超出了通过媒体的电动力学扩大类比的一般相对性(TEGR)的远程关联。特别是,本文的主要目的是详细研究TEGR的局部本构延长,该局部是非局部重力(NLG)的局部限制。在此框架内,我们研究了经过修改的FLRW宇宙学模型。其中,最有力的事实证明是修改的笛卡尔平坦模型,这与存在正宇宙常数不一致。此外,与标准的扁平宇宙学模型相比,经过修改的笛卡尔平坦模型的动态暗能量和其他成分随宇宙的扩展而有所不同。简要探讨了修改的笛卡尔平坦模型的观察后果,并表明该模型能够解决H_0张力。
We describe a general constitutive framework for a teleparallel extension of the general theory of relativity. This approach goes beyond the teleparallel equivalent of general relativity (TEGR) by broadening the analogy with the electrodynamics of media. In particular, the main purpose of this paper is to investigate in detail a local constitutive extension of TEGR that is the local limit of nonlocal gravity (NLG). Within this framework, we study the modified FLRW cosmological models. Of these, the most cogent turns out to be the modified Cartesian flat model which is shown to be inconsistent with the existence of a positive cosmological constant. Moreover, dynamic dark energy and other components of the modified Cartesian flat model evolve differently with the expansion of the universe as compared to the standard flat cosmological model. The observational consequences of the modified Cartesian flat model are briefly explored and it is shown that the model is capable of resolving the H_0 tension.