Natural Inflation on the brane with a TeV-scale gravity: Parameter constraints after Planck 2015

NELSON MANUEL VIDELA MENARES, Grigorios Panotopoulos

Research output: Contribution to journalConference articlepeer-review

Abstract

In the present work we have studied Natural Inflation in the framework of the Randall-Sundrum II brane model (RS-II) in the light of the latest Planck results. Adopting the Randall-Sundrum fine-tuning, the model is characterized by 3 parameters in total, namely the 5-dimensional Planck mass M 5 and the two mass scales of the inflaton potential f and Λ. We show in the ns - r plane the theoretical predictions of the model together with the allowed contour plots, and we conclude that the model is viable. By using the Planck results only it is possible to determine the two mass scales of the inflaton potential in terms of M 5, which remains undetermined. However, there are several good theoretical reasons to consider ahigher-dimensional Planck mass of the order of 10 TeV, which is compatible with primordial nucleosynthesis. If we insist on considering a M 5 of this order of magnitude all parameters are known.

Original languageEnglish
Article number012014
JournalJournal of Physics: Conference Series
Volume1043
Issue number1
DOIs
StatePublished - 25 Jun 2018
Event20th Chilean Physics Symposium - Santiago, Chile
Duration: 30 Nov 20162 Dec 2016

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