Constructing phantom cosmologies from standard scalar field universes

We illustrate how form-invariance transformations can be used for constructing phantom cosmologies from standard scalar field universes. First we discuss how to relate two flat Friedmann-Robertson-Walker cosmologies with different barotropic indexes [Formula presented] and [Formula presented]. Then...

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Autores principales:	Chimento, L.P., Lazkoz, R.
Formato:	JOUR
Materias:	Cosmic rays Equations of state of liquids Mathematical models Mathematical transformations Relativity Phantom cosmologies Standard scalar field universes Astrophysics
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00319007_v91_n21_p_Chimento
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00319007_v91_n21_p_Chimento
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spelling	todo:paper_00319007_v91_n21_p_Chimento2023-10-03T14:43:11Z Constructing phantom cosmologies from standard scalar field universes Chimento, L.P. Lazkoz, R. Cosmic rays Equations of state of liquids Mathematical models Mathematical transformations Relativity Phantom cosmologies Standard scalar field universes Astrophysics We illustrate how form-invariance transformations can be used for constructing phantom cosmologies from standard scalar field universes. First we discuss how to relate two flat Friedmann-Robertson-Walker cosmologies with different barotropic indexes [Formula presented] and [Formula presented]. Then we consider the particular case [Formula presented], and we show that, if the matter content is interpreted in terms of self-interacting scalar fields, then the corresponding transformation provides the link between a standard and a phantom cosmology. After that, we illustrate the method by considering models with exponential potentials. Finally, we also show that the mentioned duality persists even if the typical brane-world modifications to the Friedmann equation are considered. © 2003 The American Physical Society. Fil:Chimento, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319007_v91_n21_p_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	Cosmic rays Equations of state of liquids Mathematical models Mathematical transformations Relativity Phantom cosmologies Standard scalar field universes Astrophysics
spellingShingle	Cosmic rays Equations of state of liquids Mathematical models Mathematical transformations Relativity Phantom cosmologies Standard scalar field universes Astrophysics Chimento, L.P. Lazkoz, R. Constructing phantom cosmologies from standard scalar field universes
topic_facet	Cosmic rays Equations of state of liquids Mathematical models Mathematical transformations Relativity Phantom cosmologies Standard scalar field universes Astrophysics
description	We illustrate how form-invariance transformations can be used for constructing phantom cosmologies from standard scalar field universes. First we discuss how to relate two flat Friedmann-Robertson-Walker cosmologies with different barotropic indexes [Formula presented] and [Formula presented]. Then we consider the particular case [Formula presented], and we show that, if the matter content is interpreted in terms of self-interacting scalar fields, then the corresponding transformation provides the link between a standard and a phantom cosmology. After that, we illustrate the method by considering models with exponential potentials. Finally, we also show that the mentioned duality persists even if the typical brane-world modifications to the Friedmann equation are considered. © 2003 The American Physical Society.
format	JOUR
author	Chimento, L.P. Lazkoz, R.
author_facet	Chimento, L.P. Lazkoz, R.
author_sort	Chimento, L.P.
title	Constructing phantom cosmologies from standard scalar field universes
title_short	Constructing phantom cosmologies from standard scalar field universes
title_full	Constructing phantom cosmologies from standard scalar field universes
title_fullStr	Constructing phantom cosmologies from standard scalar field universes
title_full_unstemmed	Constructing phantom cosmologies from standard scalar field universes
title_sort	constructing phantom cosmologies from standard scalar field universes
url	http://hdl.handle.net/20.500.12110/paper_00319007_v91_n21_p_Chimento
work_keys_str_mv	AT chimentolp constructingphantomcosmologiesfromstandardscalarfielduniverses AT lazkozr constructingphantomcosmologiesfromstandardscalarfielduniverses
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Constructing phantom cosmologies from standard scalar field universes

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