On the Starobinsky model of inflation from supergravity

By F. Farakos, A. Kehagias, A. Riotto. 2013

222 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Oceanography

View Paper: https://www.semanticscholar.org/paper/afbd27916ed93e6ce633b1cc7d809fa65bb2b315

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Andrei Linde
2. D. Baumann
3. R. Kallosh
4. E. Pajer
5. V. Poulin
6. S. Vagnozzi
7. D. Roest
8. Sergio Ferrara

In Nuclear and High Energy Physics

1. Andrei Linde
2. R. Kallosh
3. D. Baumann
4. D. Roest
5. Sergio Ferrara
6. E. Pajer
7. S. Vagnozzi
8. E. di Valentino

In Oceanography

1. D. Roest
2. Andrei Linde
3. E. Pajer
4. R. Kallosh
5. Sergio Ferrara
6. M. Liguori
7. D. Baumann
8. V. Desjacques

Citations in the corpus

• Cosmology with nilpotent superfields (2014, background): “There is an alternative class of models suggested by R+R supergravity in new minimal formulation [53] where the problem of moduli stabilization does not arise at all since the inflaton is the only scalar (member of a massive vector or tensor multiplet) but the Kähler manifold in which it is embedded”
• Inflationary Cosmology after Planck 2013 (2014, background): “In new minimal supergravity, R+R(2) models and their dual were given in [102, 103, 96, 104].”
• Minimal Supergravity Models of Inflation (2013, background): “In this respect, it is interesting that in the supergravity version of the theory R + γR2 developed in [11] the issue of stabilization of the extra moduli does not appear at all because this theory does not contain any other scalars except the inflaton [22].”
• A polynomial f(R) inflation model (2013, background): “The higher derivative terms may also originate from the supergravity [10, 11].”
• Multi-field conformal cosmological attractors (2013, result): “Recently another set of models with similar predictions was identified in [17–22], and some earlier works in the related area, such as [24,25], have been rediscovered and reinforced [6,19,21,23].”
• Exploring cosmic origins with CORE: Inflation (2016, methodology): “The Starobinsky model is currently the simplest among the inflationary models allowed by Planck data [3, 5, 205] and has been at the center stage of several theoretical developments in supergravity [78, 81, 82, 206], as explained in Section 2.”
• On sgoldstino-less supergravity models of inflation (2014, background): “A notable exception occurs in the models of D-term inflation with gauged shift symmetry [5–7], where the scalar partner of the inflaton is removed from the spectrum by a supersymmetric Higgs effect.”