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Moduli Corrections to D-term Inflation

Ph. Brax·C. van de Bruck·A. C. Davis·Stephen C. Davis·R. Jeannerot·M. Postma
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Abstract

We present a D-term hybrid inflation model, embedded in supergravity with moduli stabilisation. Its novel features allow us to overcome the serious challenges of combining D-term inflation and moduli fields within the same string-motivated theory. One salient point of the model is the positive definite uplifting D-term arising from the moduli stabilisation sector. By coupling this D-term to the inflationary sector, we generate an effective Fayet-Iliopoulos term. Moduli corrections to the inflationary dynamics are also obtained. Successful inflation is achieved for a limited range of parameter values with spectral index compatible with the WMAP3 data. Cosmic D-term strings are also formed at the end of inflation; these are no longer Bogomol'nyi-Prasad-Sommerfeld (BPS) objects. The properties of the strings are studied.

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Ph. Brax, C. van de Bruck, A. C. Davis, Stephen C. Davis, R. Jeannerot, M. Postma. 2007-01-30. Moduli Corrections to D-term Inflation. https://doi.org/10.1088/1475-7516%2F2007%2F01%2F026

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