Passer au contenu principal

Astronomy (thesaurus)

Choisissez le vocabulaire dans lequel chercher

aligner
annoter
télécharger

Concept information

... > theoretical physics aspects > field theory > classical field theory > gravitation > general relativity > Gödel universe

Terme préférentiel

Gödel universe  

Définition

  • 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 générique

Synonyme(s)

  • Gödel cosmology
  • Gödel metric

Traductions

URI

http://data.loterre.fr/ark:/67375/MDL-NCZMV0JG-M

Télécharger ce concept :

RDF/XML TURTLE JSON-LD