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* Title: Isocurvature constraints on portal couplings


* Speaker: Kunio Kaneta (CTPU Seminar room - KAIST Munji Campus)

 

* Date: 3:00~4:00 PM, 4 Feb 2015

 

* Abstract: When interactions among the SM sector and dark matter are feeble, the freeze-in mechanism becomes efficient for the dark matter production. In this case, the dark matter never enter the thermal bath unlike the conventional freeze-out scenario, and is produced by non-thermal way. I will briefly review the freeze-in dark matter production, and show the constraints from isocurvature perturbations.

 

* Refereces:

K.~Kainulainen, S.~Nurmi, T.~Tenkanen, K.~Tuominen and V.~Vaskonen,

``Isocurvature Constraints on Portal Couplings,'

arXiv:1601.07733 [astro-ph.CO].

PTC Seminar / Journal Club / Workshop

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