Artículo
Duality invariance and cosmological dynamics
Fecha de publicación:
11/2008
Editorial:
World Scientific
Revista:
International Journal of Modern Physics D
ISSN:
0218-2718
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A duality transformation that interrelates expanding and contracting cosmological models is shown to single out a duality invariant, interacting two-component description of any irrotational, geodesic and shear-free cosmic medium with vanishing three-curvature scalar. We have applied this feature to a system of matter and radiation, to a mixture of dark matter and dark energy, to minimal and conformal scalar fields, and to an enlarged Chaplygin gas model of the cosmic substratum. We have extended the concept of duality transformations to cosmological perturbations and demonstrated the invariance of adiabatic pressure perturbations under these transformations. © 2008 World Scientific Publishing company.
Palabras clave:
Cosmology
,
Duality
,
Phantom
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Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Chimento, Luis Pascual; Zimdahl, Winfried; Duality invariance and cosmological dynamics; World Scientific; International Journal of Modern Physics D; 17; 12; 11-2008; 2229-2254
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