- ACADEMIC RESEARCH - My favourite research topics are related to relativistic cosmology. Here is a brief list of my main fields of interest. Cosmic Microwave Background (CMB) non-Gaussianity and spectral distortions Stochastic background of gravitational waves Big-bang nucleosynthesis Neutrino background decoupling (with my PhD student Julien Froustey) Bianchi (i.e. anisotropic) cosmologies Vector theories in cosmologies Non-linear relativistic perturbation theory (see xPand package)