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.

The goal is to see whether the cosmological constant really is constant through history.

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.