مشخصات پژوهش

خانه /Non-Gaussianity of scalar ...
عنوان
Non-Gaussianity of scalar perturbations in tachyon field inflation coupled to Gauss-Bonnet curvature
نوع پژوهش مقاله چاپ‌شده
کلیدواژه‌ها
Inflation, Cosmological perturbations, Non-Gaussianity, Non-minimal coupling, Observational constraints
چکیده
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.
پژوهشگران کوروش نوذری (نفر اول)، رضا آقابراریان (نفر دوم)، نرگس رشیدی تلوکی (نفر سوم)