Non-Gaussianities in extended D-term inflation


Bernardeau, F. (2008). Non-Gaussianities in extended D-term inflation. Perimeter Institute. https://pirsa.org/08060132


Bernardeau, Francis. Non-Gaussianities in extended D-term inflation. Perimeter Institute, Jun. 03, 2008, https://pirsa.org/08060132


          @misc{ pirsa_08060132,
            doi = {},
            url = {https://pirsa.org/08060132},
            author = {Bernardeau, Francis},
            keywords = {Quantum Fields and Strings, Particle Physics, Cosmology},
            language = {en},
            title = {Non-Gaussianities in extended D-term inflation},
            publisher = {Perimeter Institute},
            year = {2008},
            month = {jun},
            note = {PIRSA:08060132 see, \url{https://pirsa.org}}


I will present extensions of hybrid inflationary models in the context of supersymmetric D-term in- flation. I will show that there exists a large domain of parameters in which significant primordial non-Gaussianities can be produced while preserving a scale free power spectrum for the metric fluctuations. In particular I will explicitly present the expected bi- and trispectrum for such models and compared the results to the current and expected observational constraints. It is to be noticed that it is necessary to use both the bi- and tri-spectra of CMB anisotropies to efficiently reduce the parameter space of such models.