General Relativity
The stress-energy tensor is a second-order tensor field containing energy-momentum densities, energy-momentum fluxes, and shear stresses, of a mass-energy distribution. The divergence of this tensor vanishes:
because energy and momentum are conserved. This is an important constraint on the form the Einstein field equations take in general relativity.
Read more about this topic: Continuity Equation
Famous quotes containing the words general and/or relativity:
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