183 citations · 2.2k across the 55 of their papers we have counts for
55 papers
Nonlinear Relativistic Effects on Cosmological Redshift Drift
Pierre Béchaz, Giuseppe Fanizza, Giovanni Marozzi +1
Using a fully gauge-invariant approach, we compute for the first time in the literature relativistic effects on the redshift drift up to second order in cosmological perturbation t…
A Light-Cone Approach to Higher-Order Cosmological Observables
Pierre Béchaz, Giuseppe Fanizza, Giovanni Marozzi +1
We develop a second-order cosmological perturbation theory on a background geometry expressed in terms of light-cone coordinates, extending the first-order analyses available in th…
Gauge invariant quantum backreaction in U(1) axion inflation
Davide Campanella Galanti, Pietro Conzinu, Giovanni Marozzi +1
We evaluate the quantum backreaction due to a gauge field coupled to a pseudo-scalar field driving a slow-roll inflationary stage, the so-called axion inflation. The backreaction i…
formalism on the past light-cone
Giuseppe Fanizza, Giovanni Marozzi, Matheus Medeiros
We apply the gradient expansion approximation to the light-cone gauge, obtaining a separate universe picture at non-linear order in perturbation theory within this framework. There…
On the stability of string-hole gas
Denis Bitnaya, Pietro Conzinu, Giovanni Marozzi
Focusing on a string-hole gas within the pre-big bang scenario, we study the stability of its solutions in the phase space. We firstly extend the analysis present in the literature…
A Simple, Exact Formulation of Number Counts in the Geodesic-Light-Cone Gauge
G. Fanizza, M. Gasperini, G. Marozzi
In this article, we compare different formulations of the number count prescription using the convenient formalism of the Geodesic-Light-Cone gauge. We then find a simple, exact, a…