5 papers
A Foundation for Gravitational-Wave Population Inference within the LISA Global Fit
Alexander W. Criswell, Sharan Banagiri, Vera Delfavero +3
Population inference in gravitational-wave astronomy allows us to connect individual detections to the astrophysics of compact objects and their environments. Current approaches em…
Robust non-minimal attractors in many-field inflation
Perseas Christodoulidis, Robert Rosati, Evangelos I. Sfakianakis
Multi-field inflation can be inherently non-predictive, with the exception of models with strong attractors. In this work, we focus on models with multiple scalar fields that are n…
Reconstructing Primordial Curvature Perturbations via Scalar-Induced Gravitational Waves with LISA
Jonas El Gammal, Aya Ghaleb, Gabriele Franciolini +17
Many early universe scenarios predict an enhancement of scalar perturbations at scales currently unconstrained by cosmological probes. These perturbations source gravitational wave…
Prototype Stochastic Gravitational Wave Background Recovery in the LISA Global Fit Residual
Robert Rosati, Tyson B. Littenberg
The Laser Interferometer Space Antenna (LISA) mission poses a difficult parameter estimation challenge: the sources will be so dense in both time and frequency that they all must b…
Primordial Stochastic Gravitational Wave Backgrounds from a Sharp Feature in Three-field Inflation II: The Inflationary Era
Vikas Aragam, Sonia Paban, Robert Rosati
We study the contribution of large scalar perturbations sourced by a sharp feature during cosmic inflation to the stochastic gravitational wave background (SGWB), extending our pre…