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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| Formato: | Artículo publishedVersion |
| Lenguaje: | Inglés |
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2005
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03702693_v631_n3_p93_Aguirregabiria |
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paperaa:paper_03702693_v631_n3_p93_Aguirregabiria2023-06-12T16:47:49Z Quintessence as k-essence Phys Lett Sect B Nucl Elem Part High-Energy Phys 2005;631(3):93-99 Aguirregabiria, J.M. Chimento, L.P. Lazkoz, R. 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 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| language |
Inglés |
| orig_language_str_mv |
eng |
| 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. |
| format |
Artículo Artículo publishedVersion |
| author |
Aguirregabiria, J.M. Chimento, L.P. Lazkoz, R. |
| spellingShingle |
Aguirregabiria, J.M. Chimento, L.P. Lazkoz, R. Quintessence as k-essence |
| author_facet |
Aguirregabiria, J.M. Chimento, L.P. Lazkoz, R. |
| author_sort |
Aguirregabiria, J.M. |
| 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 |
http://hdl.handle.net/20.500.12110/paper_03702693_v631_n3_p93_Aguirregabiria |
| work_keys_str_mv |
AT aguirregabiriajm quintessenceaskessence AT chimentolp quintessenceaskessence AT lazkozr quintessenceaskessence |
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1769810119652016128 |