12 citations · 12 across the 7 of their papers we have counts for
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Warm dark matter from freeze-in at stronger coupling
Duarte Feiteira, Oleg Lebedev, Vinícius Oliveira
We study warm Higgs portal dark matter (DM) in the framework of freeze-in at stronger coupling. This scenario assumes that the Standard Model thermal bath temperature has always be…
Cosmological gravitational particle production: Starobinsky vs Bogolyubov, uncertainties, and issues
Duarte Feiteira, Oleg Lebedev
We study production of free and feebly interacting scalars during inflation using the Bogolyubov coefficient and Starobinsky stochastic approaches. While the two methods agree in t…
Invisible Higgs decay from dark matter freeze-in at stronger coupling
Oleg Lebedev, António P. Morais, Vinícius Oliveira +1
We study the Higgs boson decay into dark matter (DM) in the framework of freeze-in at stronger coupling. Even though the Higgs-DM coupling is significant, up to order one, DM does…
-mediated dark matter freeze-in at stronger coupling
Giorgio Arcadi, David Cabo-Almeida, Oleg Lebedev
We study freeze-in production of fermionic dark matter mediated by a gauge boson. In particular, we explore the regime of Boltzmann-suppressed production, when the Stand…
Higgs Portal Dark Matter Freeze-in at Stronger Coupling: Observational Benchmarks
Giorgio Arcadi, Francesco Costa, Andreas Goudelis +1
We study freeze-in production of Higgs portal dark matter (DM) at temperatures far below the dark matter mass. The temperature of the Standard Model (SM) thermal bath may have neve…
Probing sterile neutrino freeze-in at stronger coupling
Niko Koivunen, Oleg Lebedev, Martti Raidal
The regime of dark matter (DM) freeze-in at stronger coupling interpolates between freeze-in and freeze-out. It relies on Boltzmann-suppressed dark matter production, implying that…
Temperature evolution in the Early Universe and freeze-in at stronger coupling
Catarina Cosme, Francesco Costa, Oleg Lebedev
Dark matter freeze-in at stronger coupling is operative when the Standard Model (SM) bath temperature never exceeds the dark matter mass. An attractive feature of this scenario is…