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Coupled dark energy field variation

Facultad de Ciencias, Universidad Autónoma del Estado de México, Instituto literario 100, Toluca 5000, Edo. Mex., México

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and

Germán Izquierdo

Facultad de Ciencias, Universidad Autónoma del Estado de México, Instituto literario 100, Toluca 5000, Edo. Mex., México

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https://doi.org/10.1142/S0217732314501752Cited by:2 (Source: Crossref)

Abstract

The variation of the dark energy field is found under the assumption that the dark energy is parametric and interacts with the cold dark matter. Considering that the variation of the field could not exceed the Planck mass, we obtain bounds on the coupling and adiabatic coefficients. Three parametrizations of the adiabatic coefficients are considered and two coupling terms where the energy flows from dark energy to dark matter, or the other way around.

Keywords:

PACS: 98.80.Es

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