Higgs Portal Inflation with Fermionic Dark Matter
Department of Physics and Texas Cosmology Center, The University of Texas at Austin, TX 78712, USA
2 Asia Pacific Center for Theoretical Physics, Pohang 37673, Korea
3 Amherst Center for Fundamental Interactions, Department of Physics, University of Massachusetts, Amherst, MA 01003, USA
Published online: 9 January 2018
We discuss the inflationary model presented in , involving a gauge singlet scalar field and fermionic dark matter added to the standard model. Either the Higgs or the singlet scalar could play the role of the inflaton, and slow roll is realized through its non-minimal coupling to gravity. The effective scalar potential is stabilized by the mixing between the scalars as well as the coupling with the fermionic field. Mixing of the two scalars also provides a portal to dark matter. Constraints on the model come from perturbativity and stability, collider searches and dark matter constraints and impose a constraining relationship on the masses of dark matter and scalar fields. Inflationary predictions are generically consistent with current Planck data.
© The Authors, published by EDP Sciences, 2018
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