Superconformal D-Term Inflation
| Title: | Superconformal D-Term Inflation |
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| Authors: | Buchmüller, W., Domcke, V., Schmitz, K. |
| Publication Year: | 2012 |
| Collection: | Astrophysics High Energy Physics - Phenomenology High Energy Physics - Theory |
| Subject Terms: | High Energy Physics - Phenomenology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Theory |
| More Details: | 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 ~ 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. Comment: 27 pages, 7 figures; v2: discussion in section 2 slightly extended, minor corrections, typos removed, matches published JCAP version |
| Document Type: | Working Paper |
| DOI: | 10.1088/1475-7516/2013/04/019 |
| Access URL: | http://arxiv.org/abs/1210.4105 |
| Accession Number: | edsarx.1210.4105 |
| Database: | arXiv |
| DOI: | 10.1088/1475-7516/2013/04/019 |
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