192 citations · 1.3k across the 33 of their papers we have counts for
7 papers · 1 filter
Horizon Feedback Inflation
Malcolm Fairbairn, Tommi Markkanen, David Rodriguez-Roman
We consider the effect of the Gibbons-Hawking radiation on the inflaton in the situation where it is coupled to a large number of spectator fields. We argue that this will lead to…
Quantum corrections to quartic inflation with a non-minimal coupling: metric vs. Palatini
Tommi Markkanen, Tommi Tenkanen, Ville Vaskonen +1
We study models of quartic inflation where the inflaton field is coupled non-minimally to gravity, , and perform a study of quantum corrections in curved space-time at…
Light scalars on cosmological backgrounds
Tommi Markkanen
We study the behaviour of a light quartically self-interacting scalar field on curved backgrounds that may be described with the cosmological equation state parameter . At l…
Vacuum Stability in the Early Universe and the Backreaction of Classical Gravity
Tommi Markkanen
In the case of a metastable electroweak vacuum the quantum corrected effective potential plays a crucial role in the potential instability of the Standard Model. In the Early Unive…
Do metric fluctuations affect the Higgs dynamics during inflation?
Tommi Markkanen, Sami Nurmi, Arttu Rajantie
We show that the dynamics of the Higgs field during inflation is not affected by metric fluctuations if the Higgs is an energetically subdominant light spectator. For Standard Mode…
Narrowing the window of inflationary magnetogenesis
Tommi Markkanen, Sami Nurmi, Syksy Rasanen +1
We consider inflationary magnetogenesis where the conformal symmetry is broken by the term . We assume that the magnetic field power spectrum today between 0.…