cosmological constant

(redirected from Einstein's cosmological constant)
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an arbitrary constant in the equations of general relativity theory

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Shortly after Einstein published his general relativity theory, the Dutch physicist, Willem de Sitter, solved the general relativity equations without Einstein's cosmological constant to describe what appeared to be a static unchanging universe.
There is significant observational evidence for the detection of Einstein's cosmological constant ([LAMBDA]), or a component of material content of the universe that varies only slowly with time and space and so acts like [LAMBDA].
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