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Título:
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Constant roll inflation in multifield models
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Autores:
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Guerrero Roman, Merce ;
Rubiera García, Diego ;
Saez-Chillon Gomez, Diego
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Tipo de documento:
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texto impreso
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Editorial:
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Amer Physical Soc, 2020-12-16
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física-Modelos matemáticos
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Materia = Ciencias: Física: Física matemática
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Tipo = Artículo
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Resumen:
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Constant roll inflation is analyzed in the presence of multiscalar fields which are assumed to be described by a constant roll rate each. The different cases are studied and the corresponding potentials are reconstructed. The exact solutions are obtained, which show a similar behavior to the single scalar field model. For one of the cases analyzed in the paper, the so-called adiabatic field also constantly roll(s) while entropy perturbations become null, while the second case may lead to nonadiabatic perturbations. Both cases can fit the Planck data well by assuming the appropriate values for the free parameters of the models.
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En línea:
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https://eprints.ucm.es/id/eprint/63761/1/Rubiera%2C%20D%2017%20libre.pdf
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