29 citations · 209 across the 13 of their papers we have counts for
13 papers
Signals of primordial phase transitions on CMB maps
P. S. Corasaniti, L. Amendola, F. Occhionero
The analysis of the CMB anisotropies is a rich source of cosmological informations. In our study, we simulated the signals produced by the relics of a first order phase transition…
The Dyer-Roeder distance in quintessence cosmology and the estimation of H_0 through time-delays
Fabio Giovi, Franco Occhionero, Luca Amendola
We calculate analytically and numerically the Dyer-Roeder distance in perfect fluid quintessence models and give an accurate fit to the numerical solutions for all the values of th…
Present limits to cosmic bubbles from the COBE-DMR three point correlation function
P. S. Corasaniti, L. Amendola, F. Occhionero
The existence of large scale voids in several galaxy surveys suggests the occurence of an inflationary first order phase transition. This process generates primordial bubbles that,…
Time variability of the gravitational constant and Type Ia supernovae
Luca Amendola, Stefano Corasaniti, Franco Occhionero
We investigate to which extent a time variation of the gravitational constant or other fundamental constants affects the best fit of the Hubble diagram of type Ia supernovae. In pa…
Stochastic gravitational background from inflationary phase transitions
Carlo Baccigalupi, Luca Amendola, Pierluigi Fortini +1
We consider true vacuum bubbles generated in a first order phase transition occurring during the slow rolling era of a two field inflation: it is known that gravitational waves are…
Imprints of Primordial Voids on the CMB
C. Baccigalupi, L. Amendola, F. Occhionero
We generalize in several ways the results existing in the literature: a) we make use of an exact general relativistic solution for a spherical, nearly empty cavity in the matter do…