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Multi-Instantons, Supersymmetry and Topological Field Theories

192   0   0.0 ( 0 )
 نشر من قبل Francesco Fucito
 تاريخ النشر 2000
  مجال البحث
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In this letter we argue that instanton-dominated Greens functions in N=2 Super Yang-Mills theories can be equivalently computed either using the so-called constrained instanton method or making reference to the topological twisted version of the theory. Defining an appropriate BRST operator (as a supersymmetry plus a gauge variation), we also show that the expansion coefficients of the Seiberg-Witten effective action for the low-energy degrees of freedom can be written as integrals of total derivatives over the moduli space of self-dual gauge connections.

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