In this letter we argue that instanton-dominated Green's 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. (C) 2000 Elsevier Science B.V. All rights reserved.
|Titolo:||Multi - instantons, supersymmetry and topological field theories.|
|Autori:||Diego Bellisai; Francesco Fucito; TANZINI A; Gabriele Travaglini|
|Rivista:||PHYSICS LETTERS. SECTION B|
|Data di pubblicazione:||2000|
|Digital Object Identifier (DOI):||10.1016/S0370-2693(00)00396-8|
|Appare nelle tipologie:||1.1 Journal article|