The Price of WMAP Inflation in Supergravity
J. Ellis, Z. Lalak, S. Pokorski, K. Turzynski

TL;DR
This paper explores how simple inflationary models compatible with WMAP data can be embedded into supergravity frameworks, focusing on no-scale supergravity and moduli stabilization mechanisms.
Contribution
It analyzes the incorporation of quadratic and symmetry-breaking inflation potentials into supergravity, especially no-scale models, with moduli stabilization strategies.
Findings
Inflation models can be embedded in no-scale supergravity with moduli stabilization.
D- and F-term mechanisms can stabilize moduli in inflationary scenarios.
Supergravity models compatible with WMAP data are feasible with specific stabilization methods.
Abstract
The three-year data from WMAP are in stunning agreement with the simplest possible quadratic potential for chaotic inflation, as well as with new or symmetry-breaking inflation. We investigate the possibilities for incorporating these potentials within supergravity, particularly of the no-scale type that is motivated by string theory. Models with inflation driven by the matter sector may be constructed in no-scale supergravity, if the moduli are assumed to be stabilised by some higher-scale dynamics and at the expense of some fine-tuning. We discuss specific scenarios for stabilising the moduli via either D- or F-terms in the effective potential, and survey possible inflationary models in the presence of D-term stabilisation.
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