Vanilla Inflation Predicts Negative Running
Within the landscape of single-field slow-roll models, and given the present cosmological data, we show that Cosmic Inflation predicts a small negative running of the spectral index of the cosmological fluctuations. This quantity imprints the large scale structures of the universe and we have just made a prediction for its value. Will it be measured negative and small?
More …Clocking the End of Cosmic Inflation
Making observable predictions for cosmic inflation requires determining when the wavenumbers of astrophysical interest today exited the Hubble radius during the inflationary epoch. These instants are commonly evaluated using the slow-roll approximation and measured in e-folds time. Pierre, Baptiste and Christophe propose a new analytical method to determine these instants with a precision reaching the tenth of an e-fold.
More …Cosmic Inflation at the Crossroads
What is the status of Cosmic Inflation given the latest cosmological data? In a 80 pages-long publication, we present the first ever data analysis using the third-order slow-roll power spectra complemented by an unprecedented Bayesian model comparison in the landscape of nearly three-hundred models of single-field slow-roll inflation.
More …Cosmology Seminar
The next cosmology seminar takes place on Wednesday 29th of May, seminar room E349 at 2pm. Our guest speaker will be Eemeli Tomberg from the Lancaster University (Lancaster, United Kingdom).
More …Space is all around
Christophe gives a lecture on Cosmology with space-based observatories at the Euro Space Center for the school Space is all around.
More …