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cosmological constant
Sign in to saveAlso known as Einstein's cosmological constant
constant representing stress-energy density of the vacuum in Einstein's equation, which accounts for the rate of expansion of the universe
The cosmological constant is a number in Einstein's equations that represents the energy density of empty space and helps explain how fast the universe is expanding. It matters because it's essential for understanding the large-scale behavior of the universe and why that expansion appears to be accelerating.
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Wikidata facts
- Image
- Hubble constant.JPG
Show 2 more facts
- Stack Exchange tag
- physics.stackexchange.com/tags/cosmological-constant
- numeric value
- 0.00000000000000000000000000000000000000000000000000011056
Sources (2)
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~21 min read
Article
Sketch of the timeline of the Universe in the ΛCDM model. The accelerated expansion in the last third of the timeline represents the dark-energy dominated era.
Expansion · Future