D-term inflation after spontaneous symmetry breaking

Abstract

We show that 1-loop quantum corrections to the potential energy density in supersymmetric hybrid inflation, outside the inflationary valley, can not be neglected. A method is presented to calculate these 1-loop corrections and they are applied to the case of D-term hybrid inflation, where a significant amount of inflation is shown to occur after spontaneous symmetry breaking. Taking this into account improves the agreement with WMAP measurements. A gauge coupling of up to 0.3 is still consistent with the CMB density perturbation. The spectral index is predicted in between 0.98 and 1.00 and the cosmic string contribution to the CMB anisotropy is sufficiently reduced.

45 pages

References in corpus (3)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Large Scale Structure and Supersymmetric Inflation without Fine Tuning
• D-Term Inflation

Cited by in corpus (7)

• Particle physics models of inflation and curvaton scenarios
• Avoiding the blue spectrum and the fine-tuning of initial conditions in hybrid inflation
• Testing Inflation and Curvaton Scenarios with CMB Distortions
• Non-Gaussianities and Curvature Perturbations from Hybrid Inflation
• Goldstone bosons and a dynamical Higgs field
• Slow Roll during the Waterfall Regime: The Small Coupling Window for SUSY Hybrid Inflation
• Updated Constraints on Large Field Hybrid Inflation