183 citations · 323 across the 6 of their papers we have counts for
8 papers
On Adiabatic Renormalization of Inflationary Perturbations
Ruth Durrer, Giovanni Marozzi, Massimiliano Rinaldi
We discuss the impact of adiabatic renormalization on the power spectrum of scalar and tensor perturbations from inflation. We show that adiabatic regularization is ambiguous as it…
Generation of fluctuations during inflation: comparison of stochastic and field-theoretic approaches
F. Finelli, G. Marozzi, A. A. Starobinsky +2
We prove that the stochastic and standard field-theoretical approaches produce exactly the same results for the amount of light massive scalar field fluctuations generated during i…
Trans-Planckian Physics from a Nonlinear Dispersion Relation
S. E. Joras, G. Marozzi
We study a particular nonlinear dispersion relation -- a series expansion in the physical wavenumber -- for modeling first-order corrections in the equation of mot…
The Impact of Ultraviolet Regularization on the Spectrum of Curvature Perturbations During Inflation
F. Finelli, G. Marozzi, G. P. Vacca +1
Inflationary predictions based on the linear theory of cosmological perturbations are related to the two point function of a (second quantized) real scalar free field during the ac…
Back-reaction of Cosmological Fluctuations during Power-Law Inflation
G. Marozzi
We study the renormalized energy-momentum tensor of cosmological scalar fluctuations during the slow-rollover regime for power-law inflation and find that it is characterized by a…
Second Order Gauge-Invariant Perturbations during Inflation
F. Finelli, G. Marozzi, G. P. Vacca +1
The evolution of gauge invariant second-order scalar perturbations in a general single field inflationary scenario are presented. Different second order gauge invariant expressions…