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De Sitter space - Wikipedia

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In mathematical physics, n-dimensional de Sitter space (often abbreviated to dSn) is a maximally symmetric Lorentzian manifold with constant positive scalar curvature. It is the Lorentzian[further explanation needed] analogue of an n-sphere (with its canonical Riemannian metric). The main application of de Sitter space is its use in general relativity, where it serves as one of the simplest mathematical models of the universe consistent with the observed accelerating expansion of the universe. More specifically, de Sitter space is the maximally symmetric vacuum solution of Einstein's field equations with a positive cosmological constant Λ (corresponding to a positive vacuum energy density and negative pressure). De Sitter space and anti-de Sitter space are named after Willem de Sitter (1872–1934),[1][2] professor of astronomy at Leiden University and director of the Leiden Observatory. Willem de Sitter and Albert Einstein worked closely together in Leiden in the 1920s on the spacetim

De Sitter space - Wikipedia Jump to content From Wikipedia, the free encyclopedia Maximally symmetric Lorentzian manifold with a positive cosmological constant This article has multiple issues. Please help improve it or discuss these issues on the talk page . ( Learn how and when to remove these messages ) This article may be too technical for most readers to understand . Please help improve it to make it understandable to non-experts , without removing the technical details. ( May 2017 ) ( Learn how and when to remove this message ) This article relies excessively on references to primary sou

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