Quintessence as k-essence

Quintessence and k-essence have been proposed as candidates for the dark energy component of the universe that would be responsible of the currently observed accelerated expansion. In this Letter we investigate the degree of resemblance between those two theoretical setups, and find that every quint...

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Autor principal: Chimento, Luis Pascual
Publicado: 2005
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v631_n3_p93_Aguirregabiria
http://hdl.handle.net/20.500.12110/paper_03702693_v631_n3_p93_Aguirregabiria
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03702693_v631_n3_p93_Aguirregabiria
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spelling paper:paper_03702693_v631_n3_p93_Aguirregabiria2023-06-08T15:36:42Z Quintessence as k-essence Chimento, Luis Pascual Quintessence and k-essence have been proposed as candidates for the dark energy component of the universe that would be responsible of the currently observed accelerated expansion. In this Letter we investigate the degree of resemblance between those two theoretical setups, and find that every quintessence model can be viewed as a k-essence model generated by a kinetic linear function. In addition, we show the true effects of k-essence begin at second order in the expansion of the kinetic function in powers of the kinetic energy. © 2005 Elsevier B.V. All rights reserved. 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_03702693_v631_n3_p93_Aguirregabiria http://hdl.handle.net/20.500.12110/paper_03702693_v631_n3_p93_Aguirregabiria
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Quintessence and k-essence have been proposed as candidates for the dark energy component of the universe that would be responsible of the currently observed accelerated expansion. In this Letter we investigate the degree of resemblance between those two theoretical setups, and find that every quintessence model can be viewed as a k-essence model generated by a kinetic linear function. In addition, we show the true effects of k-essence begin at second order in the expansion of the kinetic function in powers of the kinetic energy. © 2005 Elsevier B.V. All rights reserved.
author Chimento, Luis Pascual
spellingShingle Chimento, Luis Pascual
Quintessence as k-essence
author_facet Chimento, Luis Pascual
author_sort Chimento, Luis Pascual
title Quintessence as k-essence
title_short Quintessence as k-essence
title_full Quintessence as k-essence
title_fullStr Quintessence as k-essence
title_full_unstemmed Quintessence as k-essence
title_sort quintessence as k-essence
publishDate 2005
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v631_n3_p93_Aguirregabiria
http://hdl.handle.net/20.500.12110/paper_03702693_v631_n3_p93_Aguirregabiria
work_keys_str_mv AT chimentoluispascual quintessenceaskessence
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