Effective action in general chiral superfield model
  The effective action in general chiral superfield model with arbitrary k\"{a}hlerian potential $K(\bar{\Phi},\Phi)$ and chiral (holomorphic) potential $W(\Phi)$ is considered. The one-loop and two-loop contributions to k\"{a}hlerian effective potential and two-loop (first non-zero) contribution to chiral effective potential are found for arbitrary form of functions $K(\bar{\Phi},\Phi)$ and $W(\Phi)$. It is found that despite the theory is non-renormalizable in general case two-loop contribution to holomorphic effective potential is always finite. 
A.Yu. Petrov