Intrinsic property of spacetime ?

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SUMMARY

The intrinsic properties of spacetime include the Lorentz interval and the metric, which are fundamental to understanding its structure. Curvature and torsion are properties associated with connections, particularly in the context of teleparallel gravity. The discussion highlights the challenge of deriving parallel transport from the metric in the presence of torsion, as noted in Wald's literature. It is established that without torsion, a connection can be uniquely identified from the metric.

PREREQUISITES
  • Understanding of Lorentz intervals in spacetime
  • Familiarity with metric tensors
  • Knowledge of parallel transport concepts
  • Basic principles of curvature and torsion in differential geometry
NEXT STEPS
  • Study the derivation of parallel transport from the metric in the context of torsion
  • Explore Wald's "General Relativity" for deeper insights on connections and curvature
  • Investigate teleparallel gravity and its implications on spacetime properties
  • Learn about the role of curvature and torsion in modern physics
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Students of theoretical physics, researchers in general relativity, and anyone interested in the geometric properties of spacetime and their implications in advanced physics.

Worldline
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Hi friends

what are intrinsic properties of spacetime ?
curvature & torsion ? or they are just properties of connections ?
Since in teleparallel gravity we consider them as properties of connections.

thank u
 
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Well, the Lorentz interval is obviously a property of space-time, and that gives us a metric.

What we need to go on to get a connection and curvature from the metric is parallel transport.

Reading the fine print in Wald, though, it's not terribly clear if you can get parallel transport from the metric in the way I'm used to in the presence of torsion. So I can answer the first part fairly confidently, I think - space-time gives you the Lorentz interval and the metric.

But I'm not sure , in the presence of torsion, what it takes to go from the metric to parallel transport (which gives you connections and curvature.) At the moment I'm suspecting it does not, but I might be seriously confused. I opened a different thread so I don't export any confusion into this one.

Without torsion, I know it is possible to single out a connection from a metric.
 
Last edited:
Thank pervect
i am a bit confused !
i think that i need more study !
 

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