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
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