The Discrete Z2Nc Symmetry And Effective Superpotential In SUSY Gluodynamics
G. Gabadadze
Abstract
We find an expression for the effective superpotential describing the Nc vacua of SU(Nc) SUSY gluodynamics. The superpotential reduces in some approximation to the Veneziano-Yankielowicz expression amended by the term restoring the discrete Z2Nc symmetry. Moreover, the superpotential, being restricted to one particular vacuum state, yields the expression which was derived recently to describe all the lowest-spin physical states of the theory. The corresponding scalar potential has no cusp singularities and can be used to study the domain walls interpolating between the chirally asymmetric vacua of the model.
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