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Puzzling thing about QFT in curved space-time

by Shyan
Tags: curved, puzzling, spacetime, thing
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Aug29-14, 12:16 PM
Shyan's Avatar
P: 928
In the page http://en.wikiped, under Shortcomings of four-dimensional spacetime", you can see the following line:

It is possible to formulate quantum field theory in curved spacetime, yet even this still cannot incorporate GR because gravity is not renormalizable in QFT.
Is it correct?

If it is, how can it be? Because in GR, gravity is space-time curvature!!!
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Aug29-14, 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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