Seiberg–Witten theory

In theoretical physics, Seiberg–Witten theory is an ${\displaystyle {\mathcal {N}}=2}$ supersymmetric gauge theory with an exact low-energy effective action (for massless degrees of freedom), of which the kinetic part coincides with the Kähler potential of the moduli space of vacua. Before taking the low-energy effective action, the theory is known as ${\displaystyle {\mathcal {N}}=2}$ supersymmetric Yang–Mills theory, as the field content is a single ${\displaystyle {\mathcal {N}}=2}$ vector supermultiplet, analogous to the field content of Yang–Mills theory being a single vector gauge field (in particle theory language) or connection (in geometric language).

The theory was studied in detail by Nathan Seiberg and Edward Witten (Seiberg & Witten 1994).