This biennial prize of the GDR TheMoSiA, co-financed by the Modeling and Simulation subdivision of the Physical Chemistry division of the Société Chimique de France, aims to reward an outstanding thesis in the field of theoretical chemistry, while also commemorating the valuable contribution that Gaston Berthier (1923-2009) made to the development of quantum chemistry and the training of young French theoretical chemists.This year, the Gaston Berthier thesis prize is awarded to ... (to be announced).