A program of research in theoretical elementary particle physics will include the study of the relation between quantum field theory in three-dimensional space on the one hand, and gravity and supergravity in higher dimensions on the other hand. Quantum field theory describes such phenomena as the strong nuclear forces. Supergravity is a limiting case of the string theory that may unify all of the forces of nature, including gravity. It has been shown that the connection between quantum field theory and gravity gives quantitative information about the properties of field theory when forces between particles are very strong. This strong - force information is required for many applications and is generally not accessible by other methods.