# Ju l 2 00 9 1 The Dual Quark Models a

@inproceedings{Bardakci2009JuL2, title={Ju l 2 00 9 1 The Dual Quark Models a}, author={Korkut Bardakci and Martin B. Halpern}, year={2009} }

We briefly recall the historical environment around our 1971 and 1975 constructions of current-algebraic internal symmetry on the open string. These constructions included the introduction of world-sheet fermions, the independent discovery of affine Lie algebra in physics (level one of affine su(3)), the first examples of the affine-Sugawara and coset constructions, and finally – from compactified spatial dimensions on the string – the first vertexoperator constructions of the fermions and… Expand

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