Equations of quantum theory cannot describe gravity at all - on the contrary. By Schrödinger equation all wave packets of free particles should expand into infinity, not to collapse by gravity. We cannot switch 1 = 1 to 1 = -1 by any causal math because quantum theory reverses time arrow of general relativity.
- By using of particle simulation of nested density fluctuations inside of very dense gas. At the certain level of condensation the resulting solution inside of dense particle clusters would become close to general relativity, while the solution of outside them would become close to general relativity.
- We can solve wave equation in very high number of dimensions. After the solution in inner 3D slice of solution can be compared with quantum mechanics, in outer 3D slice it can be compared with general relativity.