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.
- Compare Einstein model.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use cosmological constant in a sentence
They also demonstrate, once again, that Einstein’s simplest form of dark energy—the cosmological constant—agrees the most with our observations.Dark Energy: Map Gives Clue About What It Is—but Deepens Dispute About the Cosmic Expansion Rate | Julian Bautista | July 31, 2020 | Singularity Hub
Those are the three possibilities that make sense in a universe without a cosmological constant, or without dark energy.
The universe, it turns out, expands, and Einstein considered the cosmological constant his “biggest blunder.”
But observations today suggest that, indeed, the cosmological constant is necessary.