Stanley Deser, with Richard Arnowitt and Charles W. Misner, developed the canonical dynamics of general relativity. The formulation separates physical evolution from coordinate freedom and makes the constraint structure explicit.[ref]
The Dynamics of General Relativity by Richard Arnowitt and others. Canonical reduction and gravitational constraints
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Stanley Deser is an American theoretical physicist known for his work in general relativity and quantum field theory. He has made significant contributions to various areas of theoretical physics, including the study of gravitational theories and their mathematical foundations. Deser is also noted for his work on the principles of consistency in theories of gravity, particularly in contexts such as the ADM (Arnowitt-Deser-Misner) formalism and the role of asymptotic symmetries in gravitational theories.