Proving the Absence of the Perturbative Corrections to the N=2 U(1) Kähler Potential Using the N=1 Supergraph Techniques

英文摘要：

Perturbative N=2 non-renormalization theorem states that there is no perturbative correction to the Kahler potential \int d^4θK(Φ,\barΦ). We prove this statement by using the N=1 supergraph techniques. We consider the N=2 supersymmetric U(1) gauge theory which possesses general prepotential F(Ψ).