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In this paper we discuss Nambu-Jona-Lasinio model as a classical model fordynamical mass generation and symmetry breaking. In addition we discuss thepossible supersymmetric extensions of this model resulting from interactionterms with four chiral superfields that may be regarded as a supersymmetricgeneralization of the four-fermion interactions of the Nambu-Jona-Lasiniomodel. A four-superfield interaction terms can be constructed as eitherdimension 6 or dimension 5 operators. Through analyzing solutions to the gapequations, we discuss the dynamical generation of superfield Dirac mass,including a supersymmetry breaking part. A dynamical symmetry breakinggenerally goes along with the dynamical mass generation, for which abi-superfield condensate is responsible.

Dynamical Symmetry Breaking in Supersymmetric Extensions of Nambu-Jona-Lasinio Model