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cosmological constant |
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cosmological constantTerm reluctantly added by Albert Einstein to his equations of general relativity in order to obtain a solution to the equations that described a static universe, as he believed it to be at the time. The constant has the effect of a repulsive force that acts against the gravitational attraction of matter in the universe. When Einstein heard of the evidence that the universe is expanding, he called the introduction of the cosmological constant the “biggest blunder” of his life. Recent developments suggest that in the early universe there may well have been a cosmological constant with a nonzero value. cosmological constant [¦käz·mə¦läj·ə·kəl ′kän·stənt] (relativity) The multiplicative constant for a term proportional to the metric in Einstein's equation relating the curvature of space to the energy-momentum tensor. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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If so, dark energy would resemble the cosmological constant, which Albert Einstein conceived shortly after he developed his theory of gravitation more than 90 years ago. The famous scientist came up with the idea when he proposed a theory of gravitation in 1917, but he quickly retracted the part about the cosmological constant. Lemaitre solved this problem by expropriating Einstein's cosmological constant. |
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