## Can Semiclassical garvity gives exact or approximate results ?

if we use Semiclassical Quantum Gravity , will we get or can we get EXACT results ? or only asymptotic approximation

can we use the 'old quantum rule' in Semiclassical gravity ?? i mean the fact that for the conjugate moment to the metric g we have

$$\oint \Pi _{a,b}dg_{a,b} =n.h$$

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