Duality invariance and cosmological dynamics

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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Publicado: 2008
Materias:
Cosmology
Duality
Phantom
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182718_v17_n12_p2229_Chimento
http://hdl.handle.net/20.500.12110/paper_02182718_v17_n12_p2229_Chimento
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02182718_v17_n12_p2229_Chimento
record_format dspace
spelling paper:paper_02182718_v17_n12_p2229_Chimento2025-07-30T17:59:49Z Duality invariance and cosmological dynamics Cosmology Duality Phantom 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. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182718_v17_n12_p2229_Chimento http://hdl.handle.net/20.500.12110/paper_02182718_v17_n12_p2229_Chimento
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cosmology
Duality
Phantom
spellingShingle Cosmology
Duality
Phantom
Duality invariance and cosmological dynamics
topic_facet Cosmology
Duality
Phantom
description 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.
title Duality invariance and cosmological dynamics
title_short Duality invariance and cosmological dynamics
title_full Duality invariance and cosmological dynamics
title_fullStr Duality invariance and cosmological dynamics
title_full_unstemmed Duality invariance and cosmological dynamics
title_sort duality invariance and cosmological dynamics
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182718_v17_n12_p2229_Chimento
http://hdl.handle.net/20.500.12110/paper_02182718_v17_n12_p2229_Chimento
_version_ 1840325493328445440

Ejemplares similares