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"The strong coupling from a nonperturbative determination of the Λ parameter in three-flavor QCD"
https://arxiv.org/pdf/1706.03821.pdf
https://arxiv.org/pdf/1706.03821.pdf
Their calculation gives strong coupling constant g^2/4pi ~= 0.08523 at 1.508 TeV. Small, but not tending to zero.
Lattice calculations seem to converge on strong coupling constant not going to zero as energy goes to infinity, but going to a small nonzero value.
Does it mean that quarks are not completely asymptotically free, they do interact even as distance goes to zero, just rather weakly?
https://arxiv.org/pdf/1706.03821.pdf
https://arxiv.org/pdf/1706.03821.pdf
Their calculation gives strong coupling constant g^2/4pi ~= 0.08523 at 1.508 TeV. Small, but not tending to zero.
Lattice calculations seem to converge on strong coupling constant not going to zero as energy goes to infinity, but going to a small nonzero value.
Does it mean that quarks are not completely asymptotically free, they do interact even as distance goes to zero, just rather weakly?
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