Low-scale Inflation and Supersymmetry Breaking in Racetrack Models
arXiv:0912.2324 · doi:10.1103/PhysRevD.81.083538
Abstract
In many moduli stabilization schemes in string theory, the scale of inflation appears to be of the same order as the scale of supersymmetry breaking. For low-scale supersymmetry breaking, therefore, the scale of inflation should also be low, unless this correlation is avoided in specific models. We explore such a low-scale inflationary scenario in a racetrack model with a single modulus in type IIB string theory. Inflation occurs near a point of inflection in the Kähler modulus potential. Obtaining acceptable cosmological density perturbations leads to the introduction of magnetized D7-branes sourcing non-perturbative superpotentials. The gravitino mass, m_{3/2}, is chosen to be around 30 TeV, so that gravitinos that are produced in the inflaton decay do not affect big-bang nucleosynthesis. Supersymmetry is communicated to the visible sector by a mixture of anomaly and modulus mediation. We find that the two sources contribute equally to the gaugino masses, while scalar masses are decided mainly by anomaly contribution. This happens as a result of the low scale of inflation and can be probed at the LHC.
10 pages, 3 Figures, Latex
References in corpus (27)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Monodromy in the CMB: Gravity Waves and String Inflation
- Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
- String Cosmology: A Review
- Gauge invariant MSSM inflaton
- Gaugino Condensates and D-terms from D7-branes
- Jumping Through Loops: On Soft Terms from Large Volume Compactifications
- Moduli Decays and Gravitinos
- Systematics of String Loop Corrections in Type IIB Calabi-Yau Flux Compactifications
- The Gravitino-Overproduction Problem in Inflationary Universe
- Volume Modulus Inflation and the Gravitino Mass Problem
- Unifying inflation and dark matter with neutrino masses
- Accidental Inflation in String Theory
- Sequestering in String Theory
- Instantons and Holomorphic Couplings in Intersecting D-brane Models
- Neutralino Dark Matter in Mirage Mediation
- Mirage in the Sky: Non-thermal Dark Matter, Gravitino Problem, and Cosmic Ray Anomalies
- Thresholds for Intersecting D-branes Revisited
- Attraction towards an inflection point inflation
- Probing the parameter space for an MSSM inflation and the neutralino dark matter
- Volume modulus inflection point inflation and the gravitino mass problem
- Graceful exit from a stringy landscape via MSSM inflation
- Gauge Thresholds and Kaehler Metrics for Rigid Intersecting D-brane Models
- Inflation on an Open Racetrack
- Inflation with racetrack superpotential and matter field
- D-term Uplifted Racetrack Inflation
- Minimal Seesaw as an Ultraviolet Insensitive Cure for the Problems of Anomaly Mediation
Cited by in corpus (14)
- Cosmological Moduli and the Post-Inflationary Universe: A Critical Review
- Dynamical Dark Matter: II. An Explicit Model
- Cladogenesis: Baryon-Dark Matter Coincidence from Branchings in Moduli Decay
- Baryogenesis and Late-Decaying Moduli
- Phenomenological Constraints on Axion Models of Dynamical Dark Matter
- MSSM inflation, dark matter, and the LHC
- Affleck-Dine Baryogenesis in Effective Supergravity
- Paper-boat relaxion
- Clearing the Brush: The Last Stand of Solo Small Field Inflation
- Soft SUSY Breaking Parameters and RG Running of Squark and Slepton Masses in Large Volume Swiss Cheese Compactifications
- Holomorphic Bisectional Curvatures, Supersymmetry Breaking, and Affleck-Dine Baryogenesis
- Catastrophic Inflation
- Evidence for Inflation in an Axion Landscape
- Early Universe Cosmology, Effective Supergravity, and Invariants of Algebraic Forms