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Title
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Non-Gaussianity of scalar perturbations in tachyon field inflation coupled to Gauss-Bonnet curvature
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Type
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JournalPaper
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Keywords
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Inflation, Cosmological perturbations, Non-Gaussianity, Non-minimal coupling, Observational constraints
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Abstract
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We study an inflationary model which a tachyon field, that is nonminimally coupled to the Gauss-Bonnet term, drives the inflation. The primordial perturbations in this setup are studied with details. By taking an exponential potential into account and performing a numerical analysis on the perturbation parameters, we obtain some constraints on the Gauss-Bonnet coupling parameter. Finally, the non-Gaussianity feature of the primordial tachyonic perturbations in this setup is studied.
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Researchers
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Narges Rashidi Talouki (Third Researcher), Reza Aghabararian (Second Researcher), Kourosh Nozari (First Researcher)
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