Ignatios Antoniadis (born 2 December 1955 in Chios)[1] is a Greek theoretical physicist, specializing in string theory and particle physics.
At CERN in Geneva, Switzerland, he was from 1986 to 1988 a fellow, from 1996 to 1997 a scientific associate, and from 2000 to 2014 a senior staff member.
[3] In 2021, for six months, he held the International Francqui Professorship in Exact Sciences[6] at KU Leuven-Université Libre de Bruxelles (ULB)-Vrije Universiteit Brussel (VUB).
He played an important role in the development of superstring theory models in four dimensions (fermionic construction).
In 2008 he received an Advanced Grant from the European Research Commission (ERC).