static spacetime

called geodesics of the spacetime – straight lines in the case of Minkowski space and their closest equivalent in the curved spacetime of general relativity

we have Λ = 3/α2 and R = 4Λ = 12/α2. We can introduce static coordinates（英语：static spacetime） ( t , r , … ) {\displaystyle (t,r,\ldots )} for de Sitter

Itzhak Bars, Gauge Symmetry in Phase Space, Consequences for Physics and Spacetime, Int.J.Mod.Phys. A25 (2010) 5235-5252, arXiv:1004.0688 [hep-th]. Itzhak

David L.; Visser, Matt; Scott, Susan M. The Kerr spacetime: A brief introduction. The Kerr Spacetime: Rotating Black Holes in General Relativity. Cambridge

[2018-08-09], （原始内容存档 (PDF)于2018-02-02）  Dean Rickles, Symmetry, Structure, and Spacetime: 158, 2007 [2016-07-09], ISBN 9780444531162, （原始内容存档于2020-08-19）  Tim