File:DeSitter-conformal.svg

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English: Conformal diagram of de Sitter space. Each point in the diagram (except the vertical sides, the "poles") corresponds to a 2-sphere (for a 4-dimensional de Sitter space). I+ and I- are the future and past infinities.
  • The blue lines are light rays sent by an observer static in the north pole. The red lines are light rays received by this observer.
  • The area covered by "blue" light rays is the portion of spacetime that an observer departing from the north pole in the remote past (left bottom vertex) can access to and influence. This portion of space is the one covered by the "expanding" FRW patch for a dark energy-dominated universe.
  • The area covered by "red" light rays is the portion of spacetime that an observer arriving to the north pole in the remote future (left upper vertex) can be influenced by and come from. This portion of space is the one covered by the "contracting" FRW patch for a dark energy-dominated universe.
  • The intersection of the two areas, within the black diagonals, is the portion of de Sitter space covered by the static patch.
Español: Diagrama conforme del espacio de de Sitter. Cada punto en el diagrama (excepto los lados verticales, los "polos") corresponde a una 2-esfera (para el caso de un de Sitter 4-dimensional). I+ e I- son los infinitos futuro y pasado.
  • Las líneas azules son rayos de luz enviados por un observador estático en el polo norte. Las líneas rojas son rayos de luz recibidos por este observador.
  • El área cubierta por los rayos "azules" es la porción del espacio-tiempo que un observador, partiendo del polo norte en el pasado remoto (vértice inferior izquierdo), puede influenciar y recorrer. Esta porción del espacio-tiempo es la cubierta por las coordenadas FRW para un universo dominado por energía oscura en expasión.
  • El área cubierta por los rayos "rojos" es la porción del espacio-tiempo que un observador, llegando al polo norte en el futuro remoto (vértice superior izquierdo), puede haberle influenciado. Esta porción del espacio-tiempo es la cubierta por las coordenadas FRW para un universo dominado por energía oscura en contracción.
  • La intersección de ambas áreas, dentro de las diagonales negras, es la porción del espacio tiempo-cubierta por las coordenadas estáticas.
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Author kismalac
 
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Date/TimeThumbnailDimensionsUserComment
current19:26, 3 April 2011Thumbnail for version as of 19:26, 3 April 2011429 × 438 (28 KB)Kismalac (talk | contribs)fonts, spanish text
01:41, 25 October 2010Thumbnail for version as of 01:41, 25 October 2010429 × 438 (17 KB)Kismalac (talk | contribs)Some fixes. Inkscape version.
01:29, 25 October 2010Thumbnail for version as of 01:29, 25 October 2010429 × 438 (10 KB)Kismalac (talk | contribs){{Information |Description={{en|1=Conformal diagram of de Sitter space. Each point in the diagram (except the horizontal sides, the "poles") corresponds to a 2-sphere (for a 4-dimensional de Sitter space). I^+ and I^- are the future and past infinities. *

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