Richard Arnowitt co-developed a canonical treatment of general relativity with Stanley Deser and Charles W. Misner. Their framework organizes spatial geometry, conjugate momenta and constraints, and supplies an asymptotic definition of gravitational energy.[ref]
The Arnowitt-Deser-Misner energy is associated with suitable asymptotic boundary conditions; it is not a universal pointwise energy-density formula for an arbitrary spacetime.
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Richard Arnowitt is a prominent theoretical physicist known for his contributions to general relativity and theoretical cosmology. He is particularly noted for his work on the Arnowitt-Deser-Misner (ADM) formalism, which provides a way to formulate general relativity in a more manageable framework by separating space and time. This formalism plays a crucial role in the study of gravitational waves and the initial value problems in general relativity.