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Mar1-12, 08:37 PM
P: 381
Quote Quote by atyy View Post
The point is that classically it makes no difference - they are equivalent as long as we restrict to curved spacetimes that can be covered by harmonic coordinates. Since they are equivalent, we use whichever picture is most convenient for describing the phenomenon in question.
I'm interested not classically, but quantumly like how the step by step process occurs from the big bang.. like at planck time, how does the flat spacetime and spin 2 interact and expand. The details are what I'm interested in. You just kept mentioning the classical limit which was not what I was asking.