On Number of Nflation Fields

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We study the Nflation model, in which a collection of massive scalar fields drive the inflation simultaneously. We find, when the number of fields is larger than the square of ratio of the Planck scale $M_p$ to the average value $\bar m$ of fields masses, the slow roll inflation region will disappear. This suggests that in order to make Nflation responsible for our observable universe, the number of fields driving the Nflation must be bounded by the above ratio. This result is also consistent with recent arguments from black hole physics.
13 pages, 3 figures;added more comments,to publish in JCAP

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High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/205250

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0801.3503
 http://arxiv.org/abs/0801.3503
 JCAP0806:023,2008
 doi:10.1088/1475-7516/2008/06/023

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arXiv