Abstract
It is generally accepted that relativistic field theory is relevant in high energy physics. It is also recognized that even in QCD, which is asymptotically free (i. e., the interactions become weak at high enough energies) the scope of perturbation theory is very limited. In spite of the tremendous theoretical and experimental effort studying scaling, scaling violations, e+e−, lepton pair creation, jets and so on, the answer to the question whether and to what extent is QCD the theory of strong interactions, is very vague. At present-day energies it is difficult to disentangle perturbative and non-perturbative effects.
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References
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Hasenfratz, P. (1985). Lattice Quantum Chromodynamics. In: Fritzsch, H., Peccei, R.D., Saller, H., Wagner, F. (eds) Quarks, Leptons, and Beyond. NATO ASI Series, vol 122. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2254-0_3
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