Mimicking the LCDM model with stealths

Cuauhtemoc Campuzano (0000 0004 1766 9560grid.42707.36, Facultad de Física, Universidad Veracruzana, 91000, Xalapa, Veracruz, México) ; Víctor H. Cárdenas (0000 0000 8912 4050grid.412185.b, Facultad de Ciencias, Instituto de Física y Astronomía, Universidad de Valparaíso, Av. Gran Bretaña 1111, Valparaiso, Chile) ; Ramón Herrera (0000 0001 1537 5962grid.8170.e, Instituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla 4059, Avenida Brasil 2950, Valparaíso, Chile)

We present a new cosmological model that mimics the Lambda Cold Dark Matter by using a stealth field. This kind of field is characterized as not coupling directly to gravity; however, it is connected to the underlying matter content of the universe model. As is well known, stealth fields do not back-react on the space-time; however, their mimicry skills show how this field and its self-interaction potential determines the cosmic evolution. We show the study of the simplest model that can be developed with the stealth field.

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Published on:
19 December 2016
Publisher:
Springer/Società Italiana di Fisica
Published in:
European Physical Journal C (2016)
Issue 12
DOI:
https://doi.org/10.1140/epjc/s10052-016-4546-2
Copyrights:
The Author(s)
Licence:
CC-BY-3.0

Fulltext files: