Supergravity Modification of D-term Hybrid Inflation: Solving the Cosmic String and Spectral Index Problems via a Right-Handed Sneutrino
arXiv:hep-ph/0604245 · doi:10.1103/PhysRevD.74.063510
Abstract
Supergravity corrections due to the energy density of a right-handed sneutrino can generate a negative mass squared for the inflaton, flattening the inflaton potential and reducing the spectral index and inflaton energy density. For the case of D-term hybrid inflation, we show that the spectral index can be lowered from the conventional value n = 0.98 to a value within the range allowed by the latest WMAP analysis, n = 0.951^{+0.015}_{-0.019}. The modified energy density is consistent with non-observation of cosmic strings in the CMB if n < 0.946. The WMAP lower bound on the spectral index implies that the D-term cosmic string contribution may be very close present CMB limits, contributing at least 5% to the CMB multipoles.
14 pages LaTeX, 2 eps figures, version to be published
References in corpus (32)
- Particle Physics Models of Inflation and the Cosmological Density Perturbation
- False Vacuum Inflation with Einstein Gravity
- Large Scale Structure and Supersymmetric Inflation without Fine Tuning
- Supersymmetry Breaking in the Early Universe
- Hilltop Inflation
- D-Term Inflation
- How generic is cosmic string formation in SUSY GUTs
- Hybrid Inflation from Supergravity D Terms
- Preserving Flat Directions During Inflation
- Bounds on Cosmic Strings from WMAP and SDSS
- Inflation and Monopoles in Supersymmetric SU(4)_c x SU(2)_L x SU(2)_R
- Smooth Hybrid Inflation
- Probing the seesaw mechanism with neutrino data and leptogenesis
- Flattening the Inflaton's Potential with Quantum Corrections
- Flattening the Inflaton's Potential with Quantum Corrections II
- CMB Anisotropy Induced by Cosmic Strings on Angular Scales
- Inflation in Supersymmetric Unified Theories
- D-term inflation without cosmic strings
- Testing Supersymmetric Grand Unified Models of Inflation
- New inflation, preinflation, and leptogenesis
- -term inflation, cosmic strings, and consistency with cosmic microwave background measurement
- Sneutrino Hybrid Inflation in Supergravity
- Cosmic String from D-term Inflation and Curvaton
- Large Angle CMB Fluctuations from Cosmic Strings with a Comological Constant
- Initial Conditions for Smooth Hybrid Inflation
- Comments on D-term inflation
- Leptogenesis in Smooth Hybrid Inflation
- Adiabatic and isocurvature fluctuations of Affleck-Dine field in D-term inflation model
- Smooth hybrid inflation in supergravity with a running spectral index and early star formation
- Hiding cosmic strings in supergravity D-term inflation
- D-term Inflation and Leptogenesis by Right-handed Sneutrino
- Enlarging the parameter space of standard hybrid inflation
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- B-modes from Cosmic Strings
- Particle physics models of inflation
- Tight constraints on F- and D-term hybrid inflation scenarios
- Super Hilltop Inflation
- Unified Model of D-Term Inflation
- Inflation from High-Scale Supersymmetry Breaking
- Production of Topological Defects at the End of Inflation
- Production of topological defects at the end of inflation
- Flipped GUT Inflation
- Topological Eternal Hilltop Inflation and the Swampland Criteria
- Sneutrino Hybrid Inflation
- An Inflationary Scenario in Intersecting Brane Models
- Supergravity and Two-Field Inflation Effects in Right-Handed Sneutrino-Modified D-term Inflation
- Comments on SUSY inflation models on the brane
- A viable D-term hybrid inflation
- Large non-Gaussianity generated at the end of Extended D-term Hybrid Inflation
- Non-Gaussianity from two right-handed sneutrino curvaton decays
- Large non-Gaussianity generated after D-term Inflation by Right-Handed Sneutrino Curvaton
- Supersymmetric inflation and baryogenesis via Extra-Flat directions of the MSSM
- Global-String and Vortex Superfluids in a Supersymmetric Scenario
- Affleck-Dine leptogenesis and its backreaction to inflaton dynamics
- Modulus D-term Inflation