3 papers
astro-ph.CO2020
Bayesian reconstruction of the inflaton's speed of sound using CMB data
Guadalupe Cañas-Herrera, Jesús Torrado, Ana Achúcarro
We update the search for features, due to transient reductions in inflaton's speed of sound, in the Cosmic Microwave Background (CMB) angular power spectrum using Planck 2018 tempe…
astro-ph.CO2020
Improved reconstruction of a stochastic gravitational wave background with LISA
Raphael Flauger, Nikolaos Karnesis, Germano Nardini +3
We present a data analysis methodology for a model-independent reconstruction of the spectral shape of a stochastic gravitational wave background with LISA. We improve a previously…
astro-ph.CO2019
CosmicNet I: Physics-driven implementation of neural networks within Boltzmann-Einstein solvers
Jasper Albers, Christian Fidler, Julien Lesgourgues +2
Einstein-Boltzmann Solvers (EBSs) are run on a massive scale by the cosmology community when fitting cosmological models to data. We present a new concept for speeding up such code…