77 citations · 241 across the 8 of their papers we have counts for
8 papers
Observables In Cosmology: Three Astronomical Perspectives
Jérémie Francfort
In this thesis, I present three projects I carried out during m PhD. In the first project, I introduce Conformal Transformations and the Galaxy Number County. I explicitly show tha…
Invariance of cosmological number counts under disformal transformations
Basundhara Ghosh, Jérémie Francfort, Rajeev Kumar Jain
We investigate whether true physical observables associated with the measurements of large scale structure in the universe are frame-independent. In particular, we study if cosmolo…
A new observable for cosmic shear
Jérémie Francfort, Giulia Cusin, Ruth Durrer
In this paper we introduce a new observable to measure cosmic shear. We show that if we can measure with good accuracy both, the orientation of a galaxy and the polarisation direct…
Image Rotation from weak Lensing
Jérémie Francfort, Giulia Cusin, Ruth Durrer
Forthcoming radio surveys will include full polarisation information, which can be potentially useful for weak lensing observations. We propose a new method to measure the (integra…
RASSINE: Interactive tool for normalising stellar spectra I. Description and performance of the code
Michael Cretignier, Jérémie Francfort, Xavier Dumusque +2
Aims: We provide an open-source code allowing an easy, intuitive, and robust normalisation of spectra. Methods: We developed RASSINE, a Python code for normalising merged 1D spectr…
Black Hole Gravitational Waves in the Effective Field Theory of Gravity
Claudia de Rham, Jérémie Francfort, Jun Zhang
We investigate the propagation of gravitational waves on a black hole background within the low energy effective field theory of gravity, where effects from heavy fields are captur…
Cosmological Number Counts in Einstein and Jordan frames
Jérémie Francfort, Basundhara Ghosh, Ruth Durrer
Even though we know that physical observations are frame independent, the frame dependence of cosmological perturbations is relatively subtle and has led to confusion in the past.…
Genuinely multipartite entangled quantum states with fully local hidden variable models and hidden multipartite nonlocality
Joseph Bowles, Jérémie Francfort, Mathieu Fillettaz +2
The relation between entanglement and nonlocality is discussed in the case of multipartite quantum systems. We show that, for any number of parties, there exist genuinely multipart…