= Superpotential critical-point shift
{title2=$W'(s)=0$}
For a canonical <chiral superfield>, an affine translation $\Phi=\Psi+s$ preserves the kinetic action up to a vanishing full-superspace term. It removes the linear <superpotential> term exactly when $s$ is a critical point. For $W=\alpha+\kappa\Phi+m\Phi^2/2+g\Phi^3/6$, the shifted quadratic coefficient is $M=m+gs$ with $M^2=m^2-2g\kappa$. A real shift requires a real root; the complex field permits a complex shift as well.
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