Sub-eV scalar dark matter through the super-renormalizable Higgs portal

Federico Piazza, Maxim Pospelov

Research output: Contribution to journalArticlepeer-review

70 Scopus citations


The Higgs portal of the standard model provides the opportunity for coupling to a very light scalar field φ via the super-renormalizable operator φ(HH). This allows for the existence of a very light scalar dark matter that has coherent interaction with the standard model particles and yet has its mass protected against radiative corrections. We analyze ensuing constraints from the fifth force measurements, along with the cosmological requirements. We find that the detectable level of the fifth force can be achieved in models with low inflationary scales, and by a certain amount of fine-tuning in the initial deviation of φ from its minimum.

Original languageEnglish (US)
Article number043533
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number4
StatePublished - Aug 31 2010
Externally publishedYes


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