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Similar

W. Chao, M. Gonderinger, and M. J. Ramsey-Musolf, Higgs Vacuum Stability, Neutrino Mass, and Dark Matter
Original
2012
Cited alongside, same era.
J. R. Espinosa, T. Konstandin, and F. Riva, Strong Electroweak Phase Transitions in the Standard Model with a Singlet
Original
2012
Cited alongside, same era.
K. Enqvist, T. Meriniemi, and S. Nurmi, Generation of the Higgs Condensate and Its Decay after Inflation
Original
2013
Cited alongside, same era.
A. Kobakhidze and A. Spencer-Smith, Electroweak Vacuum (In)Stability in an Inflationary Universe
Original
2013
Cited alongside, same era.
J. M. Cline, K. Kainulainen, P. Scott, and C. Weniger, Update on scalar singlet dark matter

Then

K. Enqvist, S. Nurmi, and S. Rusak, Non-Abelian dynamics in the resonant decay of the Higgs after inflation
Original
2014
Later among the works it cites.
S. Nurmi, T. Tenkanen, and K. Tuominen, Inflationary Imprints on Dark Matter
Original
2015
Later among the works it cites.
A. Kusenko, L. Pearce, and L. Yang, Postinflationary Higgs relaxation and the origin of matter-antimatter asymmetry
Original
2015
Later among the works it cites.
A. Hook, J. Kearney, B. Shakya, and K. M. Zurek, Probable or Improbable Universe? Correlating Electroweak Vacuum Instability with the Scale of Inflation
Original
2015
Later among the works it cites.
J. R. Espinosa, G. F. Giudice, E. Morgante, A. Riotto, L. Senatore, A. Strumia, and N. Tetradis, The cosmological Higgstory of the vacuum instability

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2016

Isocurvature Constraints on Portal Couplings

Kainulainen, Kimmo, Nurmi, Sami, Tenkanen, Tommi et al.

Understand

We consider portal models which are ultraweakly coupled with the Standard Model, and confront them with observational constraints on dark matter abundance and isocurvature perturbations.

We assume the hidden sector to contain a real singlet scalar $s$ and a sterile neutrino $\psi$ coupled to $s$ via a pseudoscalar Yukawa term.
During inflation, a primordial condensate consisting of the singlet scalar $s$ is generated, and its contribution to the isocurvature perturbations is imprinted onto the dark matter abundance.
We compute the total dark matter abundance including the contributions from condensate decay and nonthermal production from the Standard Model sector.