Search Results - "Tenkanen, Tommi"

Tracing the high energy theory of gravity: an introduction to Palatini inflation by Tenkanen, Tommi

“…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…”
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Feebly interacting dark matter particle as the inflaton by Tenkanen, Tommi

“…A bstract We present a scenario where a Z 2 -symmetric scalar field ϕ first drives cosmic inflation, then reheats the Universe but remains out-of-equilibrium…”
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Phenomenology of self-interacting dark matter in a matter-dominated universe by Bernal, Nicolás, Cosme, Catarina, Tenkanen, Tommi

“…We study production of self-interacting dark matter (DM) during an early matter-dominated phase. As a benchmark scenario, we consider a model where the DM…”
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Scalar singlet dark matter in non-standard cosmologies by Bernal, Nicolás, Cosme, Catarina, Tenkanen, Tommi, Vaskonen, Ville

“…We study production of dark matter (DM) in models with a non-standard expansion history. We consider both freeze-out and freeze-in mechanisms for producing the…”
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The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe by Allahverdi, Rouzbeh, Amin, Mustafa A., Berlin, Asher, Bernal, Nicholas, Byrnes, Christian T., Delos, M. Sten, Erickcek, Adrienne L., Escudero, Miguel, Figueroa, Daniel G., Freese, Katherine, Harada, Tomohiro, Hooper, Dan, Kaiser, David I., Karwal, Tanvi, Kohri, Kazunori, Krnjaci, Gordan, Lewicki, Marek, Lozanov, Kaloian D., Poulin, Vivian, Sinha, Kuver, Smith, Tristan L., Takahashi, Tomo, Tenkanen, Tommi, Unwin, James, Watson, Scottname>

“…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…”
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Dark Matter from Scalar Field Fluctuations by Tenkanen, Tommi

“…Dark matter (DM) may have its origin in a pre-big-bang epoch, the cosmic inflation. Here, we consider for the first time a broad class of scenarios where a…”
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Tracing the high energy theory of gravity: an introduction to Palatini inflation by Tenkanen, Tommi

“…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…”
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Trans-Planckian Censorship, Inflation and Dark Matter by Tenkanen, Tommi

“…Phys. Rev. D 101, 063517 (2020) If the inflationary phase lasted longer than the minimal period, the length scales observed today originate from modes that…”
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Dark matter from scalar field fluctuations by Tenkanen, Tommi

“…Phys. Rev. Lett. 123, 061302 (2019) Dark matter (DM) may have its origin in a pre-Big Bang epoch, the cosmic inflation. Here, we consider for the first time a…”
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Standard model Higgs field and hidden sector cosmology by Tenkanen, Tommi

“…Phys. Rev. D 100, 083515 (2019) We consider scenarios where the inflaton field decays dominantly to a hidden dark matter (DM) sector. By studying the typical…”
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Minimal Higgs inflation with an $R^2$ term in Palatini gravity by Tenkanen, Tommi

“…Phys. Rev. D 99, 063528 (2019) It has recently been suggested that the Standard Model Higgs boson could act as the inflaton while minimally coupled to gravity…”
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Spectator dark matter in non-standard cosmologies by Cosme, Catarina, Tenkanen, Tommi

“…Phys. Rev. D 102, 123534 (2020) It has been shown that the observed dark matter (DM) abundance can be produced by amplification of quantum fluctuations of an…”
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Resurrecting Quadratic Inflation with a non-minimal coupling to gravity by Tenkanen, Tommi

“…We study Quadratic Inflation with the inflaton field $\phi$ coupled non-minimally to the curvature scalar $R$, so that the potential during inflation is of the…”
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The first three seconds: A Review of Possible Expansion Histories of the early Universe by Rouzbeh Allahverdi, Mustafa A. Amin, Asher Berlin, Nicolas Bernal, Christian T. Byrnes, M. Sten Delos, Adrienne L. Erickcek, Miguel Escudero, Daniel G. Figueroa, Katherine Freese, Tomohiro Harada, Dan Hooper, David I. Kaiser, Tanvi Karwal, Kazunori Kohri, Gordan Krnjaic, Marek Lewicki, Kaloian D, Lozanov, Vivian Poulin, Kuver Sinha, Tristan L. Smith, Tomo Takahashi, Tommi Tenkanen, James Unwin, Ville Vaskonen, Scott Watson

“…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…”
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Initial conditions for plateau inflation: a case study by Tenkanen, Tommi, Tomberg, Eemeli

“…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…”
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Feebly Interacting Dark Matter Particle as the Inflaton by Tenkanen, Tommi

“…We present a scenario where a $Z_2$-symmetric scalar field $\phi$ first drives cosmic inflation, then reheats the Universe but remains out-of-equilibrium…”
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Axion dark matter from Higgs inflation with an intermediate $H by Tenkanen, Tommi, Visinelli, Luca

“…JCAP 1908, 033 (2019) In order to accommodate the QCD axion as the dark matter (DM) in a model in which the Peccei-Quinn (PQ) symmetry is broken before the end…”
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Gravitational wave constraints on the observable inflation by Tanin, Erwin H, Tenkanen, Tommi

“…Gravitational waves (GW) produced in the early Universe contribute to the number of relativistic degrees of freedom, $N_{\rm eff}$, during Big Bang…”
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Towards distinguishing variants of non-minimal inflation by Takahashi, Tomo, Tenkanen, Tommi

“…We study models of inflation where the scalar field $\phi$ that drives inflation is coupled non-minimally to gravity via $\xi \phi^2 R$, or where the gravity…”
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Violation of slow-roll in non-minimal inflation by Takahashi, Tomo, Tenkanen, Tommi, Yokoyama, Shuichiro

“…Phys. Rev. D 102, 043524 (2020) We show that a non-minimal coupling to gravity can not only make some inflationary models consistent with cosmological data,…”
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