532 citations · 888 across the 5 of their papers we have counts for
22 papers
Spectator dark matter in non-standard cosmologies
Catarina Cosme, Tommi Tenkanen
It has been shown that the observed dark matter (DM) abundance can be produced by amplification of quantum fluctuations of an energetically subdominant scalar field during inflatio…
The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe
Rouzbeh Allahverdi, Mustafa A. Amin, Asher Berlin +23
It is commonly assumed that the energy density of the Universe was dominated by radiation between reheating after inflation and the onset of matter domination 54,000 years later. W…
Gravitational wave constraints on the observable inflation
Erwin H. Tanin, Tommi Tenkanen
Gravitational waves (GW) produced in the early Universe contribute to the number of relativistic degrees of freedom, , during Big Bang Nucleosynthesis (BBN). By using…
Violation of slow-roll in non-minimal inflation
Tomo Takahashi, Tommi Tenkanen, Shuichiro Yokoyama
We show that a non-minimal coupling to gravity can not only make some inflationary models consistent with cosmological data, similar to the case of Higgs inflation, but can also in…
Initial conditions for plateau inflation: a case study
Tommi Tenkanen, Eemeli Tomberg
We study initial conditions for inflation in scenarios where the inflaton potential has a plateau shape. Such models are those most favored by Planck data and can be obtained in a…
Tracing the high energy theory of gravity: an introduction to Palatini inflation
Tommi Tenkanen
We present an introduction to cosmic inflation in the context of Palatini gravity, which is an interesting alternative to the usual metric theory of gravity. In the latter case onl…