402 citations · 6.6k across the 96 of their papers we have counts for
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On the Gauge Invariance of Cosmological Gravitational Waves
V. De Luca, G. Franciolini, A. Kehagias +1
The issue of the gauge invariance of gravitational waves arises if they are produced in the early universe at second-order in perturbation theory. We address it by dividing the dis…
Constraining graviton non-Gaussianity through the CMB bispectra
Valerio De Luca, Gabriele Franciolini, Alex Kehagias +2
Tensor non-Gaussianities are a key ingredient to test the symmetries and the presence of higher spin fields during the inflationary epoch. Indeed, the shape of the three point corr…
Gravitational Wave Anisotropies from Primordial Black Holes
N. Bartolo, D. Bertacca, V. De Luca +6
An observable stochastic background of gravitational waves is generated whenever primordial black holes are created in the early universe thanks to a small-scale enhancement of the…
Primordial Black Holes from Broad Spectra: Abundance and Clustering
A. Moradinezhad Dizgah, G. Franciolini, A. Riotto
A common mechanism to form primordial black holes in the early universe is by enhancing at small-scales the scalar perturbations generated during inflation. If these fluctuations h…
Gravitational Waves from Peaks
V. De Luca, V. Desjacques, G. Franciolini +1
We discuss a novel mechanism to generate gravitational waves in the early universe. A standard way to produce primordial black holes is to enhance at small-scales the overdensity p…
The Ineludible non-Gaussianity of the Primordial Black Hole Abundance
V. De Luca, G. Franciolini, A. Kehagias +3
We study the formation of primordial black holes when they are generated by the collapse of large overdensities in the early universe. Since the density contrast is related to the…
Electromagnetic probes of primordial black holes as dark matter
Y. Ali-Haimoud, S. Clesse, J. Garcia-Bellido +91
The LIGO discoveries have rekindled suggestions that primordial black holes (BHs) may constitute part to all of the dark matter (DM) in the Universe. Such suggestions came from 1)…
The Initial Spin Probability Distribution of Primordial Black Holes
V. De Luca, V. Desjacques, G. Franciolini +2
We study the spin of primordial black holes produced by the collapse of large inhomogeneities in the early universe. Since such primordial black holes originate from peaks, that is…
Cosmological Shapes of Higher-Spin Gravity
D. Anninos, V. De Luca, G. Franciolini +2
We explore non-Gaussian features of a massless spin-two field in the Vasiliev theory of higher-spin gravity. The theory contains an infinite tower of interacting gauge fields with…