64 citations · 260 across the 21 of their papers we have counts for
8 papers · 1 filter
Collapse models and cosmology
Jerome Martin, Vincent Vennin
Attempts to apply quantum collapse theories to Cosmology and cosmic inflation are reviewed. These attempts are motivated by the fact that the theory of cosmological perturbations o…
The exponential tail of inflationary fluctuations: consequences for primordial black holes
Jose María Ezquiaga, Juan García-Bellido, Vincent Vennin
The curvature perturbations produced during an early era of inflation are known to have quasi-Gaussian distribution functions close to their maximum, where they are well constraine…
Canonical transformations and squeezing formalism in cosmology
Julien Grain, Vincent Vennin
Canonical transformations are ubiquitous in Hamiltonian mechanics, since they not only describe the fundamental invariance of the theory under phase-space reparameterisations, but…
Primordial black holes from the preheating instability
Jerome Martin, Theodoros Papanikolaou, Vincent Vennin
After the end of inflation, the inflaton field oscillates around a local minimum of its potential and decays into ordinary matter. These oscillations trigger a resonant instability…
A cosmic shadow on CSL
Jerome Martin, Vincent Vennin
The Continuous Spontaneous Localisation (CSL) model solves the measurement problem of standard quantum mechanics, by coupling the mass density of a quantum system to a white-noise…
Stochastic inflation beyond slow roll
Chris Pattison, Vincent Vennin, Hooshyar Assadullahi +1
We study the stochastic formalism of inflation beyond the usual slow-roll approximation. We verify that the assumptions on which the stochastic formalism relies still hold even far…