cosmological constant

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cosmological constant

n.
A constant introduced into the general theory of relativity, proportional to the energy density of the vacuum, and related to the rate of expansion or contraction of the universe. The vacuum energy represented by the cosmological constant is a form of dark energy.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cosmological constant - an arbitrary constant in the equations of general relativity theory
constant - a number representing a quantity assumed to have a fixed value in a specified mathematical context; "the velocity of light is a constant"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
kosmologinen vakio
References in periodicals archive ?
It is known that DE can be modelled by Einstein's cosmological constant, for which a typical fit to current observational data gives [LAMBDA] [approximately equal to] 3 x [10.sup.-122] [sec.sup.-2].
The old Lambda-Cold Dark Matter (LCDM) model furthered Einstein's cosmological constant. It was based on the assumption that dark matter was static in nature.
The researchers' calculations show that if gravitational waves are found to travel at the speed of light, this would rule out alternative gravity theories, with no dark energy, in support of Einstein's Cosmological Constant. If however, their speed differs from that of light, then Einstein's theory must be revised.
Even if Einstein's cosmological constant (repulsion) was considered to be accurate for a long time, in modern physics the mechanical worldview of the "gravity and repulsion" was rebuilt, disposing "gravity" to explain the mutual attraction between objects, and "repulsion" to define the mutual exclusion between objects.

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