116 citations · 300 across the 17 of their papers we have counts for
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Primordial black hole compaction function from stochastic fluctuations in ultra-slow-roll inflation
Sami Raatikainen, Syksy Rasanen, Eemeli Tomberg
We study the formation of primordial black holes (PBH) with ultra-slow-roll inflation when stochastic effects are important. We use the formalism and simplify the stochastic e…
Observable Gravitational Waves from Hyperkination in Palatini Gravity and Beyond
Samuel Sánchez López, Konstantinos Dimopoulos, Alexandros Karam +1
We consider cosmology with an inflaton scalar field with an additional quartic kinetic term. Such a theory can be motivated by Palatini modified gravity. Assuming a runaway…
Stochastic constant-roll inflation and primordial black holes
Eemeli Tomberg
Stochastic inflation resolves primordial perturbations non-linearly, probing their probability distribution deep into its non-Gaussian tail. The strongest perturbations collapse in…
Implications of Palatini gravity for inflation and beyond
Ioannis D. Gialamas, Alexandros Karam, Thomas D. Pappas +1
We present an introduction to cosmic inflation in the framework of Palatini gravity, which provides an intriguing alternative to the conventional metric formulation of gravity. In…