https://en.wikipedia.org/wiki/Immirzi_parameter Quote:The Immirzi parameter seems to be the only free parameter of vacuum LQG Hence LQG should provide formulas (or numerical calculation) for all dimensionless parameters of standard model . For now, at least the raw idea, where they come from. How LQC solves the naturalness problem? Why gravity is so weak, or, saying it more correctly, why particles are so lightweight (in comparison with Planks mass)? Where this tiny fraction originates?