Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/15984
Title: Scalar field dark matter and the Higgs field
Author: Bertolami, Orfeu
Cosme, Catarina
Rosa, João G.
Keywords: Dark matter
Scalar field
Higgs field
Non-renormalizable operators
Extra dimensions
Issue Date: 10-Aug-2016
Publisher: Elsevier
Abstract: We discuss the possibility that dark matter corresponds to an oscillating scalar field coupled to the Higgs boson. We argue that the initial field amplitude should generically be of the order of the Hubble parameter during inflation, as a result of its quasi-de Sitter fluctuations. This implies that such a field may account for the present dark matter abundance for masses in the range 10^-6 - 10^-4 eV, if the tensor-to-scalar ratio is within the range of planned CMB experiments. We show that such mass values can naturally be obtained through either Planck-suppressed non-renormalizable interactions with the Higgs boson or, alternatively, through renormalizable interactions within the Randall–Sundrum scenario, where the dark matter scalar resides in the bulk of the warped extra-dimension and the Higgs is confined to the infrared brane.
Peer review: yes
URI: http://hdl.handle.net/10773/15984
DOI: 10.1016/j.physletb.2016.05.047
ISSN: 0370-2693
Appears in Collections:CIDMA - Artigos
GGDG - Artigos

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