53 citations · 579 across the 48 of their papers we have counts for
3 papers · 2 filters
Quantum entanglement and non-Gaussianity in the primordial Universe
Herve Bergeron, Przemyslaw Malkiewicz, Patrick Peter
We propose a new method to investigate signatures of a quantum gravity phase in the primordial state of cosmological perturbations. We formulate and study a quantum model of a pert…
Time problem in primordial perturbations
Alice Boldrin, Przemysław Małkiewicz, Patrick Peter
We study the non-unitary relation between quantum gravitational models defined using different internal times. We show that despite the non-unitarity, it is possible to provide a p…
Relativistic modeling of cosmological structures with Bianchi IX spacetimes
Przemyslaw Malkiewicz, Jan J. Ostrowski, Ismael Delgado Gaspar
We develop a relativistic framework to investigate the evolution of cosmological structures from the initial density perturbations to the highly nonlinear regime. Our approach invo…