Scalar field dark matter spectator during inflation: the effect of self-interaction


Por: Padilla, Luis E., Alberto Vazquez, J., Matos, Tonatiuh, German, Gabriel

Publicada: 1 may 2019
Categoría: Astronomy and astrophysics

Resumen:
Nowadays cosmological inflation is the most accepted mechanism to explain the primordial seeds that led to the structure formation observed in the Universe. Current observations are in well agreement to initial adiabatic conditions, which imply that single-scalar-field inflation may be enough to describe the early Universe. However, there are several scenarios where the existence of more than a single field could be relevant during this period, for instance, the situation where the so-called spectator is present. Within the spectator scenario we can find the possibility that an ultra-light scalar field dark matter candidate could coexist with the inflaton. In this work we study this possibility where the additional scalar field could be free or self-interacting. We use isocurvature observations to constrain the free parameters of the model.

Filiaciones:
Padilla, Luis E.:
 IPN, Ctr Invest & Estudios Avanzados, Dept Fis, AP 14-740, Mexico City 07000, DF, Mexico

Alberto Vazquez, J.:
 Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Apdo Postal 48-3, Cuernavaca 62251, Morelos, Mexico

Matos, Tonatiuh:
 IPN, Ctr Invest & Estudios Avanzados, Dept Fis, AP 14-740, Mexico City 07000, DF, Mexico

German, Gabriel:
 Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Apdo Postal 48-3, Cuernavaca 62251, Morelos, Mexico
ISSN: 14757516
Editorial
IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND, Reino Unido
Tipo de documento: Article
Volumen: 2019 Número: 5
Páginas:
WOS Id: 000469974100002

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