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Puzzling thing about QFT in curved spacetime 
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#1
Aug2914, 12:16 PM

P: 928

In the page http://en.wikiped
ia.org/wiki/Hamilton%E2%80%93Jacobi%E2%80%93Einstein_equation, under Shortcomings of fourdimensional spacetime", you can see the following line: If it is, how can it be? Because in GR, gravity is spacetime curvature!!! 


#2
Aug2914, 01:57 PM

P: 1,014

You can have how fields interact in a given curved spacetime.
You cannot solve for that spacetime (in order to let the metric be a dynamical variable). 


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