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6 papers · 2 filters
Spontaneous Breaking of N=2 to N=1 in Rigid and Local Supersymmetric Theories
S. Ferrara, L. Girardello, M. Porrati
We analyze the relation between rigid and local supersymmetric N=2 field theories, when half of the supersymmetries are spontaneously broken. In particular, we show that the recent…
Minimal Higgs Branch for the Breaking of Half of the Supersymmetries in N=2 Supergravity
S. Ferrara, L. Girardello, M. Porrati
It is shown that the minimal Higgs sector of a generic N=2 supergravity theory with unbroken N=1 supersymmetry must contain a Higgs hypermultiplet and a vector multiplet. When the…
Heterotic-Type II String Duality and the H-Monopole Problem
L. Girardello, M. Porrati, A. Zaffaroni
Since T-duality has been proved only perturbatively and most of the heterotic states map into solitonic, non-perturbative, type II states, the 6-dimensional string-string duality b…
S-Duality in N=4 Yang-Mills Theories
L. Girardello, A. Giveon, M. Porrati +1
Evidence in favor of S-duality in supersymmetric Yang-Mills theories in four dimensions and with general compact, simple gauge groups is presented. (Contribution to…
On the Existence of States Saturating the Bogomol'nyi Bound in N=4 Supersymmetry
M. Porrati
We give an argument showing that in N=4 supersymmetric gauge theories there exists at least one bound state saturating the Bogomol'nyi bound with electric charge and magnetic c…
S-Duality in N=4 Yang-Mills Theories with General Gauge Groups,
Luciano Girardello, Amit Giveon, Massimo Porrati +1
't Hooft construction of free energy, electric and magnetic fluxes, and of the partition function with twisted boundary conditions, is extended to the case of supersymmetric…