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- Thread starter ilocar
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atyy

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In general relativity matter is modelled as different sorts of fields, not particles. It is these fields that have energy momentum tensors.

However, one can talk about a particle moving in curved spacetime as an approximation. In this approximation, spacetime curvature is produced by the energy-momentum tensors of all matter except for a particular particle. The particle then moves on the "background" curved spacetime created by all other matter.

http://relativity.livingreviews.org/Articles/lrr-2004-6/ [Broken]

However, one can talk about a particle moving in curved spacetime as an approximation. In this approximation, spacetime curvature is produced by the energy-momentum tensors of all matter except for a particular particle. The particle then moves on the "background" curved spacetime created by all other matter.

http://relativity.livingreviews.org/Articles/lrr-2004-6/ [Broken]

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