[simiones]

I believe QM and GR contradict each other for any curvature, but measuring the extremely small curvature/gravitational effects caused by a single particle would require enormous amounts of energy. Specifically the problem is the way that the uncertainty principle interacts with GR's assumptions.

[krastanov]

In flat space time you have QFT, which does not have severe problems until you make the gravitational fields very strong.

[simiones]

Isn't QFT limited to 0 (or otherwise negligible) gravitational interaction between particles/space-time?