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Universality classes for models of inflation

We show that the cosmological evolution of a scalar field in a potential can be obtained from a renormalisation group equation. The slow roll regime of inflation models is understood in this context as the slow evolution close to a fixed point, described by the methods of renormalisation group. This explains in part the universality observed in the predictions of a certain number of inflation models. We illustrate this behavior on a certain number of examples and discuss it in the context of the AdS/CFT correspondence.

preprint2014arXivOpen access
P. BinetruyE. KiritsisJ. MabillardM. PieroniC. Rosset
astro-ph.COhep-phgr-qchep-th
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P. BinetruyE. KiritsisJ. MabillardM. PieroniC. Rosset

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