1.2k citations · 6k across the 77 of their papers we have counts for
11 papers · 1 filter
Inflation without an Inflaton
Daniele Bertacca, Raul Jimenez, Sabino Matarrese +1
We propose a novel scenario in which scalar perturbations, that seed the large scale structure of the Universe, are generated without relying on a scalar field (the inflaton). In t…
How Well Do We Know the Scalar-Induced Gravitational Waves?
A. J. Iovino, S. Matarrese, G. Perna +2
Gravitational waves sourced by amplified scalar perturbations are a common prediction across a wide range of cosmological models. These scalar curvature fluctuations are inherently…
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…
Assessing the Impact of Unequal Noises and Foreground Modeling on SGWB Reconstruction with LISA
Jun'ya Kume, Marco Peloso, Mauro Pieroni +1
In the search for stochastic gravitational wave backgrounds (SGWB) of cosmological origin with LISA, it is crucial to account for realistic complications in the noise and astrophys…
Enhancing gravitational-wave host localization with SKYFAST: rapid volume and inclination angle reconstruction
Gabriele Demasi, Giulia Capurri, Angelo Ricciardone +3
The scientific impact of GW170817 strongly supports the need for an efficient electromagnetic follow-up campaign to gravitational-wave event candidates. The success of such campaig…
Inflationary Initial Conditions for the Cosmological Gravitational Wave Background
Lorenzo Valbusa Dall'Armi, Alina Mierna, Sabino Matarrese +1
The initial conditions on the anisotropies of the stochastic gravitational-wave background of cosmological origin (CGWB) largely depend on the mechanism that generates the gravitat…
Gravitational waves from inflation in LISA: reconstruction pipeline and physics interpretation
Matteo Braglia, Gianluca Calcagni, Gabriele Franciolini +8
Various scenarios of cosmic inflation enhance the amplitude of the stochastic gravitational wave background (SGWB) at frequencies detectable by the LISA detector. We develop tools…
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…
Investigating the impact of galaxies' compact binary hosting probability for gravitational-wave cosmology
Gabriele Perna, Simone Mastrogiovanni, Angelo Ricciardone
With the advent of future-generation interferometers a huge number of Gravitational Wave (GW) signals is expected to be measured without an electromagnetic counterpart. Although th…
Fully non-Gaussian Scalar-Induced Gravitational Waves
Gabriele Perna, Chiara Testini, Angelo Ricciardone +1
Scalar-induced Gravitational Waves (SIGWs) represent a particular class of primordial signals which are sourced at second-order in perturbation theory whenever a scalar fluctuation…
LISA Definition Study Report
Monica Colpi, Karsten Danzmann, Martin Hewitson +108
The Laser Interferometer Space Antenna (LISA) is the first scientific endeavour to detect and study gravitational waves from space. LISA will survey the sky for Gravitational Waves…