A Gauge-invariant Mechanism for Quark Confinement and a New Approach to the Mass Gap Problem
نویسنده
چکیده
The fundamental degrees of freedom of QCD, i.e., quarks and gluons, have never been observed in experiments. Only the color singlet combinations, hadrons (mesons and baryons) and glueballs, are expected to be observed. We wish to answer the question why color confinement occurs. In particular, we wish to clarify what the mechanism for quark confinement is. Dual superconductivity picture proposed by Nambu, ’t Hooft and Mandelstam in 1970s is based on the electric–magnetic duality of the ordinary superconductivity. In order to apply this idea to describe the dual superconductivity in Yang-Mills theory, however, we must answer the questions:
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