Dirac Medallists 1985

Yakov Zeldovich (1914-1987)
Space Research Institute, Moscow, Russian Federation

for far-ranging contributions to relativistic astrophysics, particularly in theories of compact objects and cosmic evolution.

Edward Witten, Princeton University, Princeton, USA (at the time of the award)

for stimulating contributions to quantum field theory, particularly with regard to the implications of new kinds of anomalies.