Couldn't you create a quantum theory of gravity simply by using the energy-momentum tensor of QED or the Standard Model or whatever in Einstein's field equations without specifically or explicitly "quantizing the gravity 'field'"? Surely this has been tried. If so, what turned out to be the problem with it? Could you provide me with references to the literature (primary or secondary--I tend to do better with the secondary literature)?

More Stuart Boehmer's questions See All
Similar questions and discussions