1306.3211 (Renata Kallosh et al.)

Superconformal Generalization of the Chaotic Inflation Model λ
φ^4/4 - ξ/ 2 φ^2 R    [PDF]

Renata Kallosh, Andrei Linde

A model of chaotic inflation based on the theory of a scalar field with potential \lambda\phi^4 perfectly matches the observational data if one adds to it a tiny non-minimal coupling to gravity -{\xi\over 2}\phi^{2} R with \xi > 0.002. We describe embedding of this model into the superconformal theory with spontaneous breaking of superconformal symmetry, and into supergravity. A model with small \xi is technically natural: setting the small parameter \xi to zero leads to a point of enhanced symmetry in the underlying superconformal theory.

View original: http://arxiv.org/abs/1306.3211