Concept information
Terme préférentiel
Gödel universe
Définition(s)
- The Gödel metric, also known as the Gödel solution or Gödel universe, is an exact solution of the Einstein field equations in which the stress–energy tensor contains two terms, the first representing the matter density of a homogeneous distribution of swirling dust particles (dust solution), and the second associated with a negative cosmological constant (see Lambdavacuum solution). This solution has many unusual properties—in particular, the existence of closed timelike curves that would allow time travel in a universe described by the solution. Its definition is somewhat artificial in that the value of the cosmological constant must be carefully chosen to match the density of the dust grains, but this spacetime is an important pedagogical example. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/G%C3%B6del_metric)
Concept(s) générique(s)
Synonyme(s)
- Gödel cosmology
- Gödel metric
Traductions
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français
-
métrique de Gödel
URI
http://data.loterre.fr/ark:/67375/MDL-NCZMV0JG-M
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