Summary
By taking account of a kind of a gluon condensation to the QCD Lagrangian, a special bag model is given. It is shown that properties of the bag model are almost the same as those of the string model. Further, the relation between the gluon condensation and the Wilson loop is discussed.
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Hirai, S. Gluon condensation and the stringlike properties of hadrons. Lett. Nuovo Cimento 39, 99–104 (1984). https://doi.org/10.1007/BF02787247
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DOI: https://doi.org/10.1007/BF02787247