The low-energy behavior ($Q^2<\text{1GeV}^2$) of the strong interaction coupling constant predicted by LFHQCD, $\alpha_S = \pi \exp(-Q^2/4\kappa^2) $, where $\kappa=M_\rho/\sqrt{2}$, is in excellent agreement with experimental data. I'm wondering if the same asymptotic behavior is predicted by any other methods?


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