Dionysios Karagiannis


Email: dakaragian at gmail.com

My research interests lie in the high-order statistics, and in particular the LSS bispectrum.  Measuring and analysing the bispectrum of current and future galaxy surveys offers a unique window into the non-linear regime of structure growth and the primordial Universe. In the case of the latter, LSS surveys could set tight constraints on primordial non-Gaussianity, which is currently the highest precision test of standard inflation. The main focus of my work is to provide efficient and accurate techniques for measuring the bispectrum of catalogues (e.g. galaxies, Intensity Mapping), as well as improving the theoretical understanding of non-linearities and LSS formation, in order to access the plethora of information hidden in the three-point correlator (e.g. primordial non-Gaussianity, non-linear bias, RSD).