Concept

Supersymmetric gauge theory

Related publications (69)

Anomalies, Fayet-Iliopoulos terms, and the consistency of orbifold field theories

Riccardo Rattazzi, Claudio Scrucca, Roberto Contino

We study the consistency of orbifold field theories and clarify to what extent the condition of having an anomaly-free spectrum of zero modes is sufficient to guarantee it. Preservation of gauge invariance at the quantum level is possible, although at the ...

2002

Anomalies in orbifold field theories

Claudio Scrucca

We study the constraints on models with extra dimensions arising from local anomaly cancellation. We consider a five-dimensional field theory with a U(I) gauge field and a charged fermion, compactified on the orbifold S-1/(Z(2) x Z(2)'). We show that, even ...

2002

Implications of exact SUSY gauge couplings for QCD

Riccardo Rattazzi

The phase structure of SUSY gauge theories can be very different from their nonsupersymmetric counterparts. Nonetheless, there is interesting information which might be gleaned from a detailed investigation of these theories. In particular, we study the pr ...

1999

Sparticle masses from the superconformal anomaly

Riccardo Rattazzi

We discuss a recently proposed scenario where the sparticle masses are purely mediated by gravity through the superconformal anomaly. This scenario elegantly evades the supersymmetric flavor problem since soft masses, like the anomaly, are not directly sen ...

1999

Soft supersymmetry breaking in deformed moduli spaces, conformal theories and N=2 Yang-Mills theory

Riccardo Rattazzi

We give a self-contained discussion of recent progress in computing the non-perturbative effects of small non-holomorphic soft supersymmetry breaking, including a simple new derivation of these results based on an anomaly-free gauged U(1)(R) background. We ...

1999

Supersymmetry-breaking loops from analytic continuation into superspace

Riccardo Rattazzi

We extend to all orders in perturbation theory a method to calculate supersymmetry-breaking effects by analytic continuation of the renormalization group into superspace. A central observation is that the renormalized gauge coupling can be extended to a re ...

1998

Unity of supersymmetry breaking models

Riccardo Rattazzi

We examine the models with gauge group U(1)(k-1) x Pi(i=1)(k) SU(n(i)), which are obtained from decomposing the supersymmetry breaking model of Affleck, Dine and Seiberg containing an antisymmetric tensor field. We note that all of these models are distinc ...

1997

Disoriented sleptons

Riccardo Rattazzi

We discuss some fundamental concerns regarding the recent proposal of Dimopoulos, Giudice and Tetradis for dynamically aligning the soft masses of the sfermions in the minimal supersymmetric standard model (MSSM) with the corresponding fermion masses to su ...

1996

Supersymmetry, Finite-Temperature and Gravitino Production in the Early Universe

Riccardo Rattazzi

We reconsider post-inflation gravitino production, in the context of hidden sector supergravity models. We discuss the possible role of supersymmetry breaking from finite temperature effects in enhancing the rate for gravitino production and argue that the ...

1995

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