کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1842259 1031420 2013 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the Starobinsky model of inflation from supergravity
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
On the Starobinsky model of inflation from supergravity
چکیده انگلیسی

We discuss how the higher-derivative Starobinsky model of inflation originates from N=1N=1 supergravity. It is known that, in the old-minimal supergravity description written by employing a chiral compensator in the superconformal framework, the Starobinsky model is equivalent to a no-scale model with F-term potential. We show that the Starobinsky model can also be originated within the so-called new-minimal supergravity, where a linear compensator superfield is employed. In this formulation, the Starobinsky model is equivalent to standard supergravity coupled to a massive vector multiplet whose lowest scalar component plays the role of the inflaton and the vacuum energy is provided by a D-term potential. We also point out that higher-order corrections to the supergravity Lagrangian represent a threat to the Starobinsky model as they can destroy the flatness of the inflaton potential in its scalar field equivalent description.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 876, Issue 1, 1 November 2013, Pages 187–200
نویسندگان
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