64 citations · 482 across the 35 of their papers we have counts for
6 papers · 1 filter
Power spectrum in stochastic inflation
Kenta Ando, Vincent Vennin
We compute the power spectrum of curvature perturbations in stochastic inflation. This combines the distribution of first crossing times through the end-of-inflation surface, which…
Primordial black holes from metric preheating: mass fraction in the excursion-set approach
Pierre Auclair, Vincent Vennin
We calculate the mass distribution of Primordial Black Holes (PBHs) produced during metric preheating. After inflation, the oscillations of the inflaton at the bottom of its potent…
Gravitational waves from a universe filled with primordial black holes
Theodoros Papanikolaou, Vincent Vennin, David Langlois
Ultra-light primordial black holes, with masses , evaporate before big-bang nucleosynthesis and can therefore not be directly constrained. They can h…
Bipartite temporal Bell inequalities for two-mode squeezed states
Kenta Ando, Vincent Vennin
Bipartite temporal Bell inequalities are similar to the usual Bell inequalities except that, instead of changing the direction of the polariser at each measurement, one changes the…
Unavoidable shear from quantum fluctuations in contracting cosmologies
Julien Grain, Vincent Vennin
Contracting cosmologies are known to be flawed with a shear instability, where the contribution from the anisotropic stress to the overall energy density grows as , with $a…
Metric preheating and radiative decay in single-field inflation
Jérôme Martin, Theodoros Papanikolaou, Lucas Pinol +1
At the end of inflation, the inflaton oscillates at the bottom of its potential and these oscillations trigger a parametric instability for scalar fluctuations with wavelength …