• Corpus ID: 14253862

Stabilizing the Runaway Quiver in Supergravity

  title={Stabilizing the Runaway Quiver in Supergravity},
  author={Kuver Sinha},
  journal={arXiv: High Energy Physics - Theory},
  • K. Sinha
  • Published 18 September 2007
  • Physics
  • arXiv: High Energy Physics - Theory
We study stabilizations of the supersymmetry breaking runaway quiver in string embeddings. Calculations are performed in four dimensional effective supergravity. Constraints on closed string fields in a type IIA construction are given. The particular case of stabilization by stringy instanton effects in a type IIB model is considered. 

A toy model for gauge-mediation in intersecting brane models

We discuss the phenomenology of a toy intersecting brane model where supersymmetry is dynamically broken in an open-string hidden sector and gauge-mediated to the visible sector. Scalar masses

Dynamics of Warped Flux Compactifications

We discuss the four dimensional effective action for type IIB flux compactifications, and obtain the quadratic terms taking warp effects into account. The analysis includes both the 4-d zero modes

D-brane instanton effects in Type II orientifolds: local and global issues

We review how D-brane instantons can generate open string couplings of stringy hierarchy in the superpotential which violate global abelian symmetries and are therefore perturbatively forbidden. We

Comments on Brane Recombination, Finite Flux Vacua, and the Swampland

The Swampland program relies heavily on the conjecture that there can only be a finite number of flux vacua (FFV conjecture). Stipulating this FFV conjecture and applying it to some older work in

Perturbative and non-perturbative aspects of orientifold compactifications

This thesis mainly focuses on novel stringy instanton effects in orientifold compactifications. Such effects are known to generate superpotential couplings which are perturbatively forbidden due to



On stable non-supersymmetric vacua at the bottom of cascading theories

We consider a wide class of cascading gauge theories which usually lead to runaway behaviour in the IR, and discuss possible deformations of the superpotential at the bottom of the cascade which

A Quiver of Many Runaways

We study the quantum corrections to the moduli space of the quiver gauge theory corresponding to regular and fractional D3-branes at the dP1 singularity. We find that besides the known runaway

Stringy instantons and quiver gauge theories

We explore contributions to the 4D effective superpotential which arise from Euclidean D3 branes (''instantons'') that intersect space-filling D-branes. These effects can perturb the effective field

Non-perturbative SQCD Superpotentials from String Instantons

The Affleck-Dine-Seiberg instanton generated superpotential for SQCD with Nf = Nc−1 flavours is explicitly derived from a local model of engineered intersecting D6-branes with a single E2-instanton.

Simple stringy dynamical supersymmetry breaking

We present simple string models which dynamically break supersymmetry without non-Abelian gauge dynamics. The Fayet model, the Polonyi model, and the O'Raifeartaigh model each arise from D-branes at

Gauge - Mediated Supersymmetry Breaking in String Compactifications

We provide string theory examples where a toy model of a SUSY GUT or the MSSM is embedded in a compactification along with a gauge sector which dynamically breaks supersymmetry. We argue that by

Supersymmetry breaking at the end of a cascade of Seiberg dualities

We study the IR dynamics of the cascading nonconformal quiver theory on $N$ regular and $M$ fractional D3 branes at the tip of the complex cone over the first del Pezzo surface. The horizon of this

Gauge/gravity duality and meta-stable dynamical supersymmetry breaking

We engineer a class of quiver gauge theories with several interesting features by studying D-branes at a simple Calabi-Yau singularity. At weak 't Hooft coupling we argue using field theory

Dynamical supersymmetry breaking in intersecting brane models

We present a simple mechanism by which supersymmetry can be dynamically broken in intersecting brane models, naturally generating an exponentially small scale. Rather than utilize either non-Abelian