SUSY07

Session

Theoretical Models (String Theory and Formal Aspects of SUSY) 6

Models6

31 Jul 2007, 14:00

Physics Building (Karlsruhe University)

125. Local SUSY-breaking minima in N_f=N_c SCQD?

Mr Andrey Katz (Technion- Israel Institute of Technology)

31/07/2007, 14:00

Theoretical Models (String Theory and Formal Aspects of SUSY)

Parallel Talk

We revisit N_f=N_c SQCD and its non-supersymmetric minima conjectured by Intriligator, Seiberg and Shih . We argue that the existence of such minima depends on the signs of three non-calculable parameters and that no evidence can be inferred by deforming the theory. We demonstrate this by studying a different deformation of the theory which involves additional gauge singlets. We show...

250. A natural renormalizable model of metastable SUSY breaking

Mr Felix Bruemmer (Heidelberg University)

31/07/2007, 14:20

Theoretical Models (String Theory and Formal Aspects of SUSY)

Parallel Talk

A model of metastable dynamical supersymmetry breaking is presented in which all scales are generated dynamically. The construction is a simple variant of the Intriligator-Seiberg-Shih model. It contains no dimensionful parameters, and does not rely on higher-dimensional operators to generate a small quark mass scale.

317. O'Raifeartaigh models with spontaneous R-symmetry breaking

Mr Luca Ferretti (SISSA/ISAS)

31/07/2007, 14:40

Theoretical Models (String Theory and Formal Aspects of SUSY)

Parallel Talk

O'Raifeartaigh models with general R-charge assignments can have vacua where both supersymmetry and R-symmetry are spontaneously broken. Most of these vacua are metastable because the potential shows a runaway behaviour. We explain the relation between runaway directions and R-symmetry, and we discuss the origin of metastability in these models. Besides, we show models with global...

338. Metastable Dynamical Supersymmetry Breaking near Points of Enhanced Symmetry

Mr Rouven Essig (Rutgers University)

31/07/2007, 15:00

Theoretical Models (String Theory and Formal Aspects of SUSY)

Parallel Talk

We construct a model with long-lived metastable vacua in which all the relevant parameters, including the supersymmetry breaking scale, are generated dynamically by dimensional transmutation. Our model consists of two sectors coupled by a singlet and combines dynamical supersymmetry breaking with an O'Raifeartaigh mechanism in terms of confined variables. The metastable vacua appear...

399. Blowups of heterotic orbifolds using toric geometry

Dr Stefan Groot Nibbelink (Heidelberg University)

31/07/2007, 15:20

Theoretical Models (String Theory and Formal Aspects of SUSY)

Parallel Talk

Heterotic orbifold models are promising candidates for models with MSSM like spectra. But orbifolds only correspond to a special place in moduli space, the bigger picture is described by the moduli space of Calabi-Yau spaces. In this talk we will make explicit connections between both pictures. To this end we study blowups of orbifold singularities, to this end we use both explicit...

402. Phenomenology of large volume models in type IIB string theory

Kerim Suruliz (Cambridge)

31/07/2007, 15:40

Theoretical Models (String Theory and Formal Aspects of SUSY)

Parallel Talk

We review the phenomenologically attractive Large Volume compactifications of Type IIB string theory. Soft terms for a general intersecting magnetised D7 brane MSSM model are computed within this class of compactifications, away from the dilute flux limit. The resulting low energy spectra are found using RG running, including effects of uncertainties due to lack of an explicit MSSM embedding....