In the case of swarms of particles, the stress energy tensor can be derived by considering the flow of energy and momentum "carried" by the particles along their worldlines.(adsbygoogle = window.adsbygoogle || []).push({});

Is there a way to interpret the field definition of the stress energy tensor from Wald, p455 E.1.26

[tex]

T_{ab} \propto \frac{\delta S_M}{\delta g^{ab}}[/tex]

Where ##S_M## is the action of the "matter" field.

as being due to the "flow" of momentum? If so, how exactly?

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# Stress energy tensor for fields

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