217 citations · 420 across the 16 of their papers we have counts for
4 papers · 1 filter
Non-linear effects on the Cosmological Gravitational Wave Background anisotropies
Alina Mierna, Sabino Matarrese, Nicola Bartolo +1
The Cosmological Gravitational Wave Background (CGWB) anisotropies contain valuable information about the physics of the early universe. Given that General Relativity is intrinsica…
Breaking parity: the case of the trispectrum from chiral scalar-tensor theories of gravity
Tommaso Moretti, Nicola Bartolo, Alessandro Greco
Recently, possible hints of parity violation have been observed in the connected galaxy four-point correlation function. Although the true origin of the signal from the analysis ha…
Proper time path integrals for gravitational waves: an improved wave optics framework
Ginevra Braga, Alice Garoffolo, Angelo Ricciardone +2
When gravitational waves travel from their source to an observer, they interact with matter structures along their path, causing distinct deformations in their waveforms. In this s…
CMB spectral distortions from enhanced primordial perturbations: the role of spectator axions
Margherita Putti, Nicola Bartolo, Sukannya Bhattacharya +1
Primordial tensor modes can induce Cosmic Microwave Background spectral distortions during horizon re-entry. We investigate a specific mechanism proposed for this purpose, characte…