183 citations · 384 across the 8 of their papers we have counts for
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Backreaction during inflation: a physical gauge invariant formulation
F. Finelli, G. Marozzi, G. P. Vacca +1
Within a genuinely gauge invariant approach recently developed for the computation of the cosmological backreaction, we study, in a cosmological inflationary context and with respe…
The cosmological backreaction: gauge (in)dependence, observers and scalars
Giovanni Marozzi
We discuss several issues related to a recent proposal for defining classical spatial averages to be used in the so-called cosmological backreaction problem. In the large averaging…
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…
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…
Adiabatic regularization of the graviton stress-energy tensor in de Sitter space-time
F. Finelli, G. Marozzi, G. P. Vacca +1
We study the renormalized energy-momentum tensor of gravitons in a de Sitter space-time. After canonically quantizing only the physical degrees of freedom, we adopt the standard ad…