Hartmut Haug obtained his Ph. D. (Dr. rer. nat. 1966) in Physics at the University of Stuttgart. From 1967 to 1969 he was a faculty member at the Department of Electrical Engeneering, University of Wisconsin in Madiason. After working as a scientific staff member at the Philips Research Laboratories in Eindhoven from 1969 to 1973, he joined the Institute of Theoretical Physics of the J.W.Goethe-University Frankfurt, where he was a full professor from 1975 to 2001 and currently is an emeritus. He has been a visiting scientist at many international research centers and universities.