anti-de Sitter space

an·​ti-de Sit·​ter space | \ ¦an-ˌtī-də-¦si-tər- How to pronounce anti-de Sitter space (audio) , ¦an-tē- \

Definition of anti-de Sitter space

: the simplest hypothetical space-time that has negative curvature The simplest spacetime with positive curvature is called de Sitter space, after Willem de Sitter, the Dutch physicist who introduced it. Many cosmologists believe that the very early universe was close to being a de Sitter space. The far future may also be de Sitter-like because of cosmic acceleration. Conversely, the simplest negatively curved spacetime is called anti-de Sitter space. It is similar to hyperbolic space except that it also contains a time direction. Unlike our universe, which is expanding, anti-de Sitter space is neither expanding nor contracting. It looks the same at all times.— Juan Maldacena, Scientific American, November 2005 — compare de sitter space

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First Known Use of anti-de Sitter space

1998, in the meaning defined above

History and Etymology for anti-de Sitter space

anti- entry 1 + de Sitter space

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Time Traveler for anti-de Sitter space

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The first known use of anti-de Sitter space was in 1998

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Cite this Entry

“Anti-de Sitter space.” Dictionary, Merriam-Webster, Accessed 3 Mar. 2021.

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