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25-27 janvier 2010
IPN Lyon
Fuseau horaire Europe/Paris

Inflation from Phase Transitions in Scalar-Tensor theories

27 janv. 2010 à 11:40
20m
Amphi Dirac (IPN Lyon)

Amphi Dirac

IPN Lyon

4, rue Enrico Fermi 69622 Villeurbanne Cedex France

Orateur

Dr Alessio Notari (University of Heidelberg)

Description

Inflation with tunneling from a false to a true vacuum is viable in the presence of a non-minimally coupled scalar field. As a by-product this field also sets dynamically the value of the Planck mass, which can be exponentially large. Therefore along with Inflation we also suggest a natural dynamical explanation for why gravity is so weak today. Moreover we predict a spectrum of gravity waves peaked at around 0.1 mHz, that will be detectable by the planned space inteferometer LISA and we discuss interesting predictions on cosmological scalar and tensor fluctuations in the CMB. Finally we discuss possible ways of making the additional scalar compatible with late-time constraints.

Auteur principal

Dr Alessio Notari (University of Heidelberg)

Documents de présentation

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