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Abstract:

We consider multiple k-essence sources and obtain the conditions their kinetic functions must satisfy so that purely kinetic k-essences lead to models with phantom barrier crossing. After that, we show that polynomial kinetic functions allow the integration of the dynamical equations determining the geometry and the k-fields. The models thus obtained have accelerated expansion at late cosmic time, representing universes ending at a finite time with a big rip singularity. In addition, these models begin to evolve from an initial singularity, so they have a finite time span. © 2006 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Crossing the phantom barrier with purely kinetic multiple k-essence
Autor:Chimento, L.P.; Lazkoz, R.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellon I, 1428 Buenos Aires, Argentina
Fisika Teorikoa, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Posta Kutxatila, 48080 Bilbao, Spain
Año:2006
Volumen:639
Número:6
Página de inicio:591
Página de fin:595
DOI: http://dx.doi.org/10.1016/j.physletb.2006.07.017
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_03702693_v639_n6_p591_Chimento.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v639_n6_p591_Chimento

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Citas:

---------- APA ----------
Chimento, L.P. & Lazkoz, R. (2006) . Crossing the phantom barrier with purely kinetic multiple k-essence. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 639(6), 591-595.
http://dx.doi.org/10.1016/j.physletb.2006.07.017
---------- CHICAGO ----------
Chimento, L.P., Lazkoz, R. "Crossing the phantom barrier with purely kinetic multiple k-essence" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 639, no. 6 (2006) : 591-595.
http://dx.doi.org/10.1016/j.physletb.2006.07.017
---------- MLA ----------
Chimento, L.P., Lazkoz, R. "Crossing the phantom barrier with purely kinetic multiple k-essence" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 639, no. 6, 2006, pp. 591-595.
http://dx.doi.org/10.1016/j.physletb.2006.07.017
---------- VANCOUVER ----------
Chimento, L.P., Lazkoz, R. Crossing the phantom barrier with purely kinetic multiple k-essence. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2006;639(6):591-595.
http://dx.doi.org/10.1016/j.physletb.2006.07.017