17 citations · 34 across the 9 of their papers we have counts for
4 papers · 1 filter
A simple example of "non-minimal" Pre-Big Bang scenario
PIetro Conzinu, Maurizio Gasperini, Eliseo Pavone
We give an example of non-minimal pre-big bang scenario able to produce the PTA signal considering a modified evolution of the high-curvature string phase, including the contributi…
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…
On Adiabatic Renormalization with a Physically Motivated Infrared Cut-Off
Chiara Animali, Pietro Conzinu, Giovanni Marozzi
We introduce a new approach to renormalize physical quantities in curved space-time by adiabatic subtraction. We use a comoving infrared cut-off in defining the adiabatic counterpa…
Primordial Black Holes from Pre-Big Bang inflation
P. Conzinu, M. Gasperini, G. Marozzi
We discuss the possibility of producing a significant fraction of dark matter in the form of primordial black holes in the context of the pre-big bang inflationary scenario. We tak…