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DrGreg
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Aug22-10, 01:02 PM
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Quote Quote by Anamitra View Post
So if we parallel transport a vector along different paths starting from the same point the components do not change,when referred to the local inertial frames.
This is really a circular argument. At any event in spacetime there isn't a single "locally inertial" coordinate system. You have a choice: for a start, you can rotate the spatial axes and get an equally good locally inertial coordinate system. Also any coordinate system moving at a constant velocity to a locally inertial system is locally inertial.

Given that choice, how would you choose which family of locally inertial coordinate systems to use along a worldline? The answer is you'd use parallel transport!

If you have two different geodesics (or any other worldline) joining a pair of events, if you parallel-transport a locally inertial coordinate system from one event to the other, you could get two different locally inertial coordinate systems at the other end!