Abstract
It is demonstrated on the basis of the Dirac equation that quarks cannot be confined by a vector gluon potential of the form(r/r 0)a or[ln(r/r 0]a, a>0, if the quark-gluon interaction conserves parity. In order to confine quarks with the parity-conserving interaction, the effective gluon potential must be a pseudovector or a scalar. These are shown in a simple Yang-Mills field with theSU(2) group.
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Ai, H.B., Hsu, J.P. Can quarks always be confined by a linear potential?. Found Phys 15, 155–159 (1985). https://doi.org/10.1007/BF00735286
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DOI: https://doi.org/10.1007/BF00735286