A
Antonio Riotto
Researcher at University of Geneva
Publications - 532
Citations - 38796
Antonio Riotto is an academic researcher from University of Geneva. The author has contributed to research in topics: Inflation (cosmology) & Dark matter. The author has an hindex of 94, co-authored 505 publications receiving 34128 citations. Previous affiliations of Antonio Riotto include University of Chicago & Spanish National Research Council.
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Non-linear power spectrum including massive neutrinos: the time-RG flow approach
Julien Lesgourgues,Julien Lesgourgues,Julien Lesgourgues,Sabino Matarrese,Massimo Pietroni,Antonio Riotto +5 more
TL;DR: In this article, the authors present the computation of the non-linear power spectrum of ΛCDM models in the presence of massive neutrinos using the Renormalization Group (RG) time-flow approach, which amounts to a resummation of perturbative corrections to the matter power spectrum to all orders.
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Quantum Boltzmann equations and leptogenesis
Andrea De Simone,Antonio Riotto +1 more
TL;DR: The closed time path formalism is a powerful Green's function formulation to describe non-equilibrium phenomena in field theory and it leads to a complete nonequilibrium quantum kinetic theory.
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Non-Gaussianity and Statistical Anisotropy from Vector Field Populated Inflationary Models
TL;DR: In this article, the authors present a review of vector field models of inflation and, in particular, of the statistical anisotropy and non-Gaussianity predictions of models with SU(2) vector multiplets.
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On Resumming Inflationary Perturbations beyond One-loop
Antonio Riotto,Martin S. Sloth +1 more
TL;DR: In this article, it was shown that the correlation functions of a scalar field in a quasi-de Sitter space exhibit at the loop level cumulative infra-red effects proportional to the total number of e-foldings of inflation.
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The halo mass function from excursion set theory. ii. the diffusing barrier
Michele Maggiore,Antonio Riotto +1 more
TL;DR: In this article, it was shown that the critical value for collapse is not a fixed constant δ c, nor a fixed function of the variance σ of the smoothed density field, as in the ellipsoidal collapse model, but rather is itself a stochastic variable whose scatter reflects a number of complicated aspects of the underlying dynamics.