Cosmological phase space analysis of the F(X)-V(ϕ) scalar field and bouncing solutions

Josue De-santiago; Jorge L. Cervantes-cota; David Wands

doi:10.1103/PhysRevD.87.023502

Cosmological phase space analysis of the F(X)-V(ϕ) scalar field and bouncing solutions

Josue De-santiago, Jorge L. Cervantes-cota, David Wands

Institute of Cosmology & Gravitation

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Abstract

We analyze the dynamical system defined by a universe filled with a barotropic fluid plus a scalar field with modified kinetic term of the form L = F (X) - V (phi). After a suitable choice of variables that allows us to study the phase space of the system we obtain the critical points and their stability. We find that they reduce to the ones defined for the canonical case when F (X) = X. We also study the field energy conditions to have a nonsingular bounce.

Original language	English
Article number	023502
Pages (from-to)	023502
Journal	Physical Review D
Volume	87
Issue number	2
Early online date	2 Jan 2013
DOIs	https://doi.org/10.1103/PhysRevD.87.023502
Publication status	Published - 15 Jan 2013

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PhysRevD.87
copyright 2013 American Physical Society
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http://link.aps.org/doi/10.1103/PhysRevD.87.023502

Cite this

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abstract = "We analyze the dynamical system defined by a universe filled with a barotropic fluid plus a scalar field with modified kinetic term of the form L = F (X) - V (phi). After a suitable choice of variables that allows us to study the phase space of the system we obtain the critical points and their stability. We find that they reduce to the ones defined for the canonical case when F (X) = X. We also study the field energy conditions to have a nonsingular bounce.",

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Cosmological phase space analysis of the F(X)-V(ϕ) scalar field and bouncing solutions

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