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A universal attractor for inflation at strong coupling · Around

2013

A universal attractor for inflation at strong coupling

Kallosh, Renata, Linde, Andrei, Roest, Diederik

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We introduce a novel non-minimal coupling between gravity and the inflaton sector.

Remarkably, for large values of this coupling all models asymptote to a universal attractor.
This behavior is independent of the original scalar potential and generalizes the attractor in the phi^4 theory with non-minimal coupling to gravity.
The attractor is located in the `sweet spot' of Planck's recent results.

Built on

A. A. Starobinsky, A New Type of Isotropic Cosmological Models Without Singularity
1981
Earlier work this paper cites.
A. D. Linde, Chaotic Inflation
1983
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K. Freese, J. A. Frieman and A. V. Olinto, Natural inflation with pseudo - Nambu-Goldstone bosons
Original
1990
Earlier work this paper cites.
L. Kofman, A. D. Linde and A. A. Starobinsky, Reheating after inflation
1997
Earlier work this paper cites.
S. Y. Khlebnikov and I. I. Tkachev, Classical decay of inflaton
1997
Earlier work this paper cites.
D. Salopek, J. Bond and J. M. Bardeen, Designing Density Fluctuation Spectra in Inflation
Original
2008
Earlier work this paper cites.
J. L. F. Barbon and J. R. Espinosa, “On the Naturalness of Higgs Inflation,” Phys. Rev. D 79
Original
2009
Earlier work this paper cites.

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