Geometry of orientifold vacua and supersymmetry breaking

Abstract

Starting from a peculiar orientifold projection proposed long ago by Angelantonj and Cardella, we elaborate on a novel perturbative scenario that involves only D-branes, together with the two types of orientifold planes ${\mathrm{O}}_{\pm }$ and anti-orientifold planes ${\overline{\mathrm{O}}}_{\pm }$. We elucidate the microscopic ingredients of such models, connecting them to a novel realization of brane supersymmetry breaking. Depending on the position of the D-branes in the internal space, supersymmetry can be broken at the string scale on branes, or alternatively only at the massive level. The main novelty of this construction is that it features no NS-NS disk tadpoles, while avoiding open-string instabilities. The one-loop potential, which depends on the positions of the D-branes, is minimized for maximally broken, nonlinearly realized supersymmetry. The orientifold projection and the effective field theory description reveal a soft breaking of supersymmetry in the closed-string sector. In such models it is possible to decouple the gravitino mass from the value of the scalar potential, while avoiding brane instabilities.

1+37 pages, 2 figures. References added

References in corpus (28)

• On the Geometry of the String Landscape and the Swampland
• The Swampland: Introduction and Review
• The String Landscape and the Swampland
• Cosmology with Nilpotent Superfields
• The Minimal Volkov - Akulov - Starobinsky Supergravity
• $\overline{D3}$ and dS
• Towards a Non-Supersymmetric String Phenomenology
• The Gravitino and the Swampland
• Chiral Heterotic Strings with Positive Cosmological Constant
• Super no-scale models in string theory
• A Gravitino Distance Conjecture
• de Sitter in non-supersymmetric string theories: no-go theorems and brane-worlds
• An Alternative for Moduli Stabilisation
• Anti-D3 branes and moduli in non-linear supergravity
• Catastrophic Production of Slow Gravitinos
• Thermal/quantum effects and induced superstring cosmologies
• Induced superstring cosmologies and moduli stabilization
• Stability, enhanced gauge symmetry and suppressed cosmological constant in 9D heterotic interpolating models
• Slow and Safe Gravitinos
• Nonthermal Gravitino Production after Large Field Inflation
• String Perturbation Theory Around Dynamically Shifted Vacuum
• Salvage of Too Slow Gravitinos
• Minimal Supergravity Inflation without Slow Gravitino
• Marginal deformations of heterotic interpolating models and exponential suppression of the cosmological constant
• An Update on Brane Supersymmetry Breaking
• The Gravitino Swampland Conjecture
• One-loop masses of Neumann-Dirichlet open strings and boundary-changing vertex operators
• On String Vacua without Supersymmetry: brane dynamics, bubbles and holography

Cited by in corpus (5)

• Revisiting Dudas-Mourad compactifications
• Super No-Scale Models with Pati-Salam Gauge Group
• Interpolation and Exponentially Suppressed Cosmological Constant in Non-Supersymmetric Heterotic Strings with General ${\mathbb{Z}}_2$ Twists
• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
• Supersymmetry breaking, brane dynamics and Swampland conjectures