cosmological constant

noun

Astronomy.

1. a term introduced by Einstein into his field equations of general relativity to permit a stationary, nonexpanding universe: it has since been abandoned in most models of the universe.

Word History and Origins

Origin of cosmological constant¹

First recorded in 1925–30

Example Sentences

A cosmological constant is a famous part of Einstein's General Relativity theory, and refers to an arbitrary constant that is present in all related field equations.

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Theorists could account for this force by adding a cosmological constant, lambda, to Albert Einstein’s theory of gravity.

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One is that dark energy is a cosmological constant, an unchanging property of space, which would mean that the universe would continue to expand indefinitely, sweeping far-off objects forever beyond our local point of view.

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It assumes dark energy is just a property of empty space called a cosmological constant, Lambda, and dark matter is just cold invisible stuff, hence CDM.

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In a Universe explained by Einstein's theory with a cosmological constant, black holes are immersed in a cosmological accelerated background.

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