Supergravity and Two-Field Inflation Effects in Right-Handed Sneutrino-Modified D-term Inflation
arXiv:0710.4273 · doi:10.1103/PhysRevD.77.063529
Abstract
We extend previous work on the minimal D-term inflation model modified by Right-Handed (RH) sneutrino fields to include additional inflaton-sector SUGRA corrections and two-field inflation effects. We show that SUGRA corrections simultaneously allow n_{s} to be within 3-year WMAP limits and the cosmic string contribution to the CMB power spectrum to be less than 5%. For gauge coupling g < 1, the CMB contribution from cosmic strings is predicted to be at least 1% while the spectral index is predicted to be less than 0.968 for a CMB string contribution less than 5%. Treating the inflaton-RH sneutrino system as a two-field inflation model, we show that the time-dependence of the RH sneutrino field strongly modifies the single-field results for values of RH sneutrino mass m_Φ > 0.1 H. The running spectral index is α= -0.0002 when m_Φ < 0.1 H but increases to positive values as m_Φ/H increases, with α> 0.008 for m_Φ > 1.0 H.
arXiv comment22 pages LaTeX, 14 eps figures, to be published in Physical Review D
References in corpus (29)
- Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
- Particle Physics Models of Inflation and the Cosmological Density Perturbation
- False Vacuum Inflation with Einstein Gravity
- A General Analytic Formula for the Spectral Index of the Density Perturbations produced during Inflation
- A general proof of the conservation of the curvature perturbation
- Adiabatic and entropy perturbations from inflation
- Large Scale Structure and Supersymmetric Inflation without Fine Tuning
- The inflationary prediction for primordial non-gaussianity
- Hilltop Inflation
- D-Term Inflation
- How generic is cosmic string formation in SUSY GUTs
- Hybrid Inflation from Supergravity D Terms
- Hybrid Inflation in Supergravity
- Non-Gaussianities in two-field inflation
- Observational Constraints on Cosmic String Production During Brane Inflation
- CMB power spectrum contribution from cosmic strings using field-evolution simulations of the Abelian Higgs model
- Bounds on Cosmic Strings from WMAP and SDSS
- Supersymmetric Hybrid Inflation with Non-Minimal Kahler potential
- Constraints on Supersymmetric Models of Hybrid Inflation
- More hilltop inflation models
- Inflation in Supersymmetric Unified Theories
- D-term inflation without cosmic strings
- Constraints on Supersymmetric Grand Unified Theories from Cosmology
- -term inflation, cosmic strings, and consistency with cosmic microwave background measurement
- Cosmic String from D-term Inflation and Curvaton
- Limits on Defects Formation and Hybrid Inflationary Models with Three-Year WMAP Observations
- Supergravity Modification of D-term Hybrid Inflation: Solving the Cosmic String and Spectral Index Problems via a Right-Handed Sneutrino
- Hiding cosmic strings in supergravity D-term inflation
- D-term inflation in non-minimal supergravity
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- Large non-Gaussianity generated after D-term Inflation by Right-Handed Sneutrino Curvaton
- Inflation with the right-handed sneutrino revisited