New models of chaotic inflation in supergravity

By R. Kallosh, Andrei Linde. 2010

283 citations recorded by the source corpus.

We introduce a new class of models of chaotic inflation inspired by the superconformal approach to supergravity. This class of models allows a functional freedom of choice of the inflaton potential V = |f()|2. The simplest model of this type has a quadratic potential m22/2. Another model describes an inflaton field with the standard symmetry breaking potential λ2(2−v2)2. Depending on the value of v and on initial conditions for inflation, the spectral index ns may take any value from 0.97 to 0.93, and the tensor-to-scalar ratio r may span the interval form 0.3 to 0.01. A generalized version of this model has a potential λ2(α−vα)2. At large and α > 0, this model describes chaotic inflation with the power law potential ~ 2α. For α < 0, this potential describes chaotic inflation with a potential which becomes flat in the large field limit. We further generalize these models by introducing a nonminimal coupling of the inflaton field to gravity. The mechanism of moduli stabilization used in these models allows to improve and generalize several previously considered models of chaotic inflation in supergravity.

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

View Paper: https://www.semanticscholar.org/paper/993288ae646be34ec0190c83aab02b84cb86186e

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. R. Kallosh
3. J. J. Carrasco
4. Sergio Ferrara
5. D. Roest
6. E. Pajer
7. A. Proeyen
8. G. Dall’Agata

In Nuclear and High Energy Physics

1. Andrei Linde
2. R. Kallosh
3. J. J. Carrasco
4. Sergio Ferrara
5. D. Roest
6. E. Pajer
7. A. Proeyen
8. G. Dall’Agata

In Oceanography

1. Andrei Linde
2. D. Roest
3. R. Kallosh
4. E. Pajer
5. J. J. Carrasco
6. Sergio Ferrara
7. Sander Mooij
8. A. Kehagias

Citations in the corpus

• Superconformal symmetry, NMSSM, and inflation (2010, methodology): “new models of chaotic inflation in supergravity, with a functional freedom of choice of the inflaton potential [19].”
• Primordial black holes from α-attractors (2018, background): “The key feature of such models was firstly introduced in the context of general inflation potentials in supergravity [48].”
• Superconformal inflationary α-attractors (2013, background): “Since that time, we learned how to implement chaotic inflation with practically any desirable potential in supergravity with chiral matter multiplets [5, 6] as well as in supergravity with vector and tensor multiplets [7].”
• Inflationary Cosmology after Planck 2013 (2014, methodology): “The results of investigation of the observational consequences of this model [89, 91, 92, 93] are described by the green area in Figure 7.”
• On sgoldstino-less supergravity models of inflation (2014, background): “1 and in the models of [29], which gives to our models an interesting advantage.”
• General inflaton potentials in supergravity (2010, background): “an arbitrary polynomial of Φ with real coefficients; see some examples in [2].”