cosmological constant

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.

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

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.

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.

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