Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/25989
Title: ν-inflaton dark matter
Author: Manso, Antonio Torres
Trancoso, João Pedro
Keywords: Inflation
Dark matter
Neutrinos
Baryogenesis
Issue Date: 1-Feb-2019
Publisher: Springer
Abstract: We present a unified model where the same scalar field can drive inflation and account for the present dark matter abundance. This scenario is based on the incomplete decay of the inflaton field into right-handed neutrino pairs, which is accomplished by imposing a discrete interchange symmetry on the inflaton and on two of the right-handed neutrinos. We show that this can lead to a successful reheating of the Universe after inflation, while leaving a stable inflaton remnant at late times. This remnant may be in the form of WIMP-like inflaton particles or of an oscillating inflaton condensate, depending on whether or not the latter evaporates and reaches thermal equilibrium with the cosmic plasma. We further show that this scenario is compatible with generating light neutrino masses and mixings through the seesaw mechanism, predicting at least one massless neutrino, and also the observed baryon asymmetry via thermal leptogenesis.
Peer review: yes
URI: http://hdl.handle.net/10773/25989
DOI: 10.1007/JHEP02(2019)020
ISSN: 1126-6708
Publisher Version: https://link.springer.com/10.1007/JHEP02(2019)020
Appears in Collections:CIDMA - Artigos
GGDG - Artigos

Files in This Item:
File Description SizeFormat 
P4.pdf2.09 MBAdobe PDFView/Open


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.