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Abstract:

We present a model of inflation where the inflaton is accommodated as a phantom field which exhibits an initial transient pole behavior and then decays into a quintessence field which is responsible for a radiation era. We must stress that the present unified model only deals with a single field and that the transition between the two eras is achieved in a smooth way, so the model does not suffer from the eternal inflation issue. We explore the conditions for the crossing of the phantom divide line within the inflationary era along with the structural stability of several critical points. We study the behavior of the phantom field within the slow-climb approximation along with the necessary conditions to have sufficient inflation. We also examine the model at the level of classical perturbations within the Newtonian gauge and determine the behavior of the gravitational potential, contrast density and perturbed field near the inflation stage and the subsequent radiation era. © 2017, The Author(s).

Registro:

Documento: Artículo
Título:Cosmological perturbations in transient phantom inflation scenarios
Autor:Richarte, M.G.; Kremer, G.M.
Filiación:Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, Curitiba, 81531-990, Brazil
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria 1428, Pabellón I, Buenos Aires, Argentina
Año:2017
Volumen:77
Número:1
DOI: http://dx.doi.org/10.1140/epjc/s10052-017-4629-8
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v77_n1_p_Richarte

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Citas:

---------- APA ----------
Richarte, M.G. & Kremer, G.M. (2017) . Cosmological perturbations in transient phantom inflation scenarios. European Physical Journal C, 77(1).
http://dx.doi.org/10.1140/epjc/s10052-017-4629-8
---------- CHICAGO ----------
Richarte, M.G., Kremer, G.M. "Cosmological perturbations in transient phantom inflation scenarios" . European Physical Journal C 77, no. 1 (2017).
http://dx.doi.org/10.1140/epjc/s10052-017-4629-8
---------- MLA ----------
Richarte, M.G., Kremer, G.M. "Cosmological perturbations in transient phantom inflation scenarios" . European Physical Journal C, vol. 77, no. 1, 2017.
http://dx.doi.org/10.1140/epjc/s10052-017-4629-8
---------- VANCOUVER ----------
Richarte, M.G., Kremer, G.M. Cosmological perturbations in transient phantom inflation scenarios. Eur. Phys. J. C. 2017;77(1).
http://dx.doi.org/10.1140/epjc/s10052-017-4629-8