D-term inflation in non-minimal supergravity

Abstract

D-term inflation is one of the most interesting and versatile models of inflation. It is possible to implement naturally D-term inflation within high energy physics, as for example SUSY GUTs, SUGRA, or string theories. D-term inflation avoids the $\eta$-problem, while in its standard form it always ends with the formation of cosmic strings. Given the recent three-year WMAP data on the cosmic microwave background temperature anisotropies, we examine whether D-term inflation can be successfully implemented in non-minimal supergravity theories. We show that for all our choices of Kähler potential, there exists a parameter space for which the predictions of D-term inflation are in agreement with the measurements. The cosmic string contribution on the measured temperature anisotropies is always dominant, unless the superpotential coupling constant is fine tuned; a result already obtained for D-term inflation within minimal supergravity. In conclusion, cosmic strings and their rôle in the angular power spectrum cannot be easily hidden by just considering a non-flat Kähler geometry.

29 pages, 9 figures; minor changes to match publihed version

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• On Inflation in String Theory
• Supergravity based inflation models: a review
• Nongaussianity from Tachyonic Preheating in Hybrid Inflation
• Cosmic Strings and Cosmic Superstrings
• Cosmic strings and their induced non-Gaussianities in the cosmic microwave background
• Cosmic Strings
• D-term chaotic inflation in supergravity
• Cosmic Superstrings
• Unified Model of D-Term Inflation
• Superconformal D-Term Inflation
• Inflation from High-Scale Supersymmetry Breaking
• Low-Scale D-term Inflation and the Relaxion
• Production of Topological Defects at the End of Inflation
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• Supergravity and Two-Field Inflation Effects in Right-Handed Sneutrino-Modified D-term Inflation
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• Is F-term hybrid inflation natural within minimal supersymmetric SO(10)?
• Theoretical constraints on brane inflation and cosmic superstring radiation
• How well do we understand the thermal history of the Universe? Implications of the recent BICEP2 data
• Supersymmetric inflation and baryogenesis via Extra-Flat directions of the MSSM
• Inflation and cosmic (super)strings: implications of their intimate relation revisited
• Modulus D-term Inflation