Summary
Quantum chromodynamics in two dimensions can be formulated in terms of gauge-invariant bilocal fields which obey an algebra with a central charge term. TheU(N) orSU(N) model is then extended to the one withN being an arbitrary real number, positive or negative.
References
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Kikkawa, K., Kunimasa, T. An algebraic extension of QCD2 . Nuov Cim A 103, 1233–1236 (1990). https://doi.org/10.1007/BF02820552
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DOI: https://doi.org/10.1007/BF02820552