مشخصات پژوهش

خانه /α-attractor and reheating in ...
عنوان
α-attractor and reheating in a model with noncanonical scalar fields
نوع پژوهش مقاله چاپ‌شده
کلیدواژه‌ها
Cosmological inflation; noncanonical scalar field; reheating; α-attractor; observational constraints.
چکیده
We consider two noncanonical scalar fields [tachyon and Diarc–Born–Infeld (DBI)] with E-model type of the potential. We study cosmological inflation in these models to find possible α-attractors. We show that similar to the canonical scalar field case, in both tachyon and DBI models there is a value of the scalar spectral index in small α limit which is just a function of the e-folds number. However, the value of ns in DBI model is somewhat different from the other ones. We also compare the results with Planck2015 TT, TE, EE+lowP data. The reheating phase after inflation is studied in these models which gives some more constraints on the model parameters.
پژوهشگران نرگس رشیدی تلوکی (نفر اول)، کوروش نوذری (نفر دوم)