Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 307 / 1 / v

For one $SU(3)$ triplet and no gauge multiplet, the only nonzero $G$-invariant soft term is the universal scalar mass,An invariant bilinear does not exist, and the formal trilinear $A{ϵ}^{ijk}{\varphi }_i{\varphi }_j{\varphi }_k$ vanishes because the scalar fields commute. Thus the phrase “general soft terms” does not generate further interactions for the field content stated in the question.

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