867 citations · 7.4k across the 120 of their papers we have counts for
119 papers
Constraints on decaying dark matter from weak lensing and cluster counts
Kari Enqvist, Seshadri Nadathur, Toyokazu Sekiguchi +1
We revisit a cosmological constraint on dark matter decaying into dark radiation at late times. In Enqvist et al. (2015), we mainly focused on the effects of decaying dark matter (…
Structure Formation with Two Periods of Inflation: Beyond PLaIn CDM
Kari Enqvist, Till Sawala, Tomo Takahashi
We discuss structure formation in models with a spectator field in small-field inflation which accommodate a secondary period of inflation. In such models, subgalactic scale primor…
Inflation with term in the Palatini formalism
Vera-Maria Enckell, Kari Enqvist, Syksy Rasanen +1
We study scalar field inflation in gravity in the Palatini formulation of general relativity. Unlike in the metric formulation, in the Palatini formulation gravity do…
Higgs inflation at the hilltop
Vera-Maria Enckell, Kari Enqvist, Syksy Rasanen +1
We study inflation with the non-minimally coupled Standard Model Higgs in the case when quantum corrections generate a hilltop in the potential. We consider both the metric and the…
A novel way to determine the scale of inflation
Kari Enqvist, Robert J. Hardwick, Tommi Tenkanen +2
We show that in the Feebly Interacting Massive Particle (FIMP) model of Dark Matter (DM), one may express the inflationary energy scale as a function of three otherwise unrel…
Postinflationary vacuum instability and Higgs-inflaton couplings
Kari Enqvist, Mindaugas Karciauskas, Oleg Lebedev +2
The Higgs-inflaton coupling plays an important role in the Higgs field dynamics in the early Universe. Even a tiny coupling generated at loop level can have a dramatic effect on th…