Prepotentials of $N=2$ Supersymmetric Gauge Theories and Soliton Equations

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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10 pages, latex, no figures, a reference added

Scientific paper

10.1142/S0217732396000151

Using recently proposed soliton equations we derive a basic identity for the scaling violation of $N=2$ supersymmetric gauge theories $\sum_i a_i\partial F/\partial a_i-2F=8 \pi i b_1 u$. Here $F$ is the prepotential, $a_i$'s are the expectation values of the scalar fields in the vector multiplet, $u=1/2\, {\rm Tr}\, \langle\phi^2\rangle$ and $b_1$ is the coefficient of the one-loop $\beta$-function. This equation holds in the Coulomb branch of all $N=2$ supersymmetric gauge theories coupled with massless matter.

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