Unified phantom cosmologies

We present a general algorithm based on the concept of form-invariance which can be used for generating phantom cosmologies. It involves linear transformations between the kinetic energy and the potential of the scalar field, and transforms solutions of the Einstein-Klein-Gordon equations which pres...

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Detalles Bibliográficos
Autor principal: Chimento, Luis Pascual
Publicado: 2005
Materias:
Duality
Phantom fields
Symmetry transformations
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182718_v14_n3-4_p587_Chimento
http://hdl.handle.net/20.500.12110/paper_02182718_v14_n3-4_p587_Chimento
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02182718_v14_n3-4_p587_Chimento
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spelling paper:paper_02182718_v14_n3-4_p587_Chimento2023-06-08T15:21:25Z Unified phantom cosmologies Chimento, Luis Pascual Duality Phantom fields Symmetry transformations We present a general algorithm based on the concept of form-invariance which can be used for generating phantom cosmologies. It involves linear transformations between the kinetic energy and the potential of the scalar field, and transforms solutions of the Einstein-Klein-Gordon equations which preserve the weak energy condition into others which violate it, while keeping the energy density of the field positive. Several known solutions representing phantom cosmologies are unified by this procedure. Using the general algorithm we obtain those solutions and show the relations between them. In addition, the scale factors of the product and seed solutions are related by a generalization of the well-known a → a-1 duality. © World Scientific Publishing Company. Fil:Chimento, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182718_v14_n3-4_p587_Chimento http://hdl.handle.net/20.500.12110/paper_02182718_v14_n3-4_p587_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 Duality
Phantom fields
Symmetry transformations
spellingShingle Duality
Phantom fields
Symmetry transformations
Chimento, Luis Pascual
Unified phantom cosmologies
topic_facet Duality
Phantom fields
Symmetry transformations
description We present a general algorithm based on the concept of form-invariance which can be used for generating phantom cosmologies. It involves linear transformations between the kinetic energy and the potential of the scalar field, and transforms solutions of the Einstein-Klein-Gordon equations which preserve the weak energy condition into others which violate it, while keeping the energy density of the field positive. Several known solutions representing phantom cosmologies are unified by this procedure. Using the general algorithm we obtain those solutions and show the relations between them. In addition, the scale factors of the product and seed solutions are related by a generalization of the well-known a → a-1 duality. © World Scientific Publishing Company.
author Chimento, Luis Pascual
author_facet Chimento, Luis Pascual
author_sort Chimento, Luis Pascual
title Unified phantom cosmologies
title_short Unified phantom cosmologies
title_full Unified phantom cosmologies
title_fullStr Unified phantom cosmologies
title_full_unstemmed Unified phantom cosmologies
title_sort unified phantom cosmologies
publishDate 2005
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02182718_v14_n3-4_p587_Chimento
http://hdl.handle.net/20.500.12110/paper_02182718_v14_n3-4_p587_Chimento
work_keys_str_mv AT chimentoluispascual unifiedphantomcosmologies
_version_ 1768544817539710976

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