Superconformal D-term inflation

被引：20

作者：

Buchmueller, W. ^{[1
]}

Domcke, V. ^{[1
]}

Schmitz, K. ^{[1
]}

机构：

[1] Deutsch Elekt Synchrotron DESY, D-22607 Hamburg, Germany

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2013年 / 04期

关键词：

inflation; particle physics - cosmology connection; physics of the early universe; supersymmetry and cosmology; FAYET-ILIOPOULOS TERMS; SUPERGRAVITY;

D O I：

10.1088/1475-7516/2013/04/019

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study models of hybrid inflation in the framework of supergravity with superconformal matter. F-term hybrid inflation is not viable since the inflaton acquires a large tachyonic mass. On the contrary, D-term hybrid inflation can successfully account for the amplitude of the primordial power spectrum. It is a two-field inflation model which, depending on parameters, yields values of the scalar spectral index down to n(s) similar or equal to 0.96. Generically, there is a tension between a small spectral index and the cosmic string bound albeit, within 2 sigma uncertainty, the current observational bounds can be simultaneously fulfilled.

引用

页数：21

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