Crothers is Emeritus Professor of Theoretical Physics at Queen’s University Belfast (QUB), having retired on 31 October 2007 after 22 1/2 years as Professor, 9 years as Reader and 10 years as Lecturer. He lectured at University College London 1970-71, was Visiting Scientist at Uppsala University in 1981, Visiting Professor (1st Class) at Université Bordeaux I in 1984 and Long-Term Visiting Scientist in 1993 at the Institute for Theoretical Atomic and Molecular Physics at Harvard and Smithsonian Astrophysical Observatory. He obtained a BA and MA in Mathematics at Balliol College Oxford, as War Memorial Open Scholar, and a PhD in Applied Mathematics at QUB. His main research interests are in the theory of atomic and molecular collisions notably in heavy-particle collisions and Wannier above-and below-threshold light-particle collisions, and in the theory of condensed matter, especially ferromagnetics, dielectrics and after-effects.
Honours include Member of the Royal Irish Academy (1991), Fellow of the American Physical Society (1994), Honorary Professor of Physics, St Petersburg State University (2003) and Honorary Fellow, Trinity College Dublin (2006). Regarding the International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC), he is Local Chair, Belfast ICPEAC XXVII (2011) and a member of the International Executive (2005-13).
International Advisory Committee Workshop Kurchatov Institute and Chernogolovka (2003); Royal Irish Academy Symposium (2003); North Atlantic Treaty Organization Workshop (2004-5).