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- DictionaryCos·mo·log·i·cal con·stant/ˌkäzməˈläjəkəl ˈkänstənt/
noun
- 1. an arbitrary constant in the field equations of general relativity.
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- Cosmological constant
Constant representing stress-energy density of the vacuum in Einstein's equation and accounts for the rate of expansion of the universe
In cosmology, the cosmological constant, alternatively called Einstein's cosmological constant, is the constant coefficient of a term that Albert Einstein temporarily added to his field equations of general relativity. He later removed it, however much later it was revived and reinterpreted as the energy density of space, or vacuum energy, that arises in quantum mechanics. It is closely associated... Wikipedia
