How to Introduce A World Time to A Part of Two Dimensional de Sitter Manifold

摘要

We define 1+1 dimensional de Sitter manifold in this paper and we considervarious coordinate systems on it. Some interesting aspects of the generaltheory of relativity are demonstrated by using the transformations between theconsidered coordinate systems. The problem might be of interest for physics andmathematics students as well as for physics teachers.