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Reconstructing the inflationary landscape with cosmological data

mayo 30 / 11:00 am - 12:00 pm

Bruno Scheihing Hitschfeld
Departamento de Física, FCFM
Universidad of Chile

 

In principle it is possible to reconstruct the shape of the inflationary landscape potential by analyzing cosmological data. The quantum fluctuations of fields orthogonal to the inflationary trajectory may have probed the structure of the local landscape potential, inducing non-Gaussianities in the primordial distribution of the curvature perturbations responsible for the cosmic microwave background (CMB) anisotropies and the large scale structure (LSS). The non-Gaussianities transferred to curvature perturbations are determined by the shape of the landscape potential, and cannot be fully characterized by 3- or 4-point correlation functions. Here we deduce an expression for the profile of this probability distribution function (PDF) in terms of the landscape potential, and show how this can be inverted in order to reconstruct the potential with the help of CMB observations.

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Detalles

Fecha:
mayo 30
Hora:
11:00 am - 12:00 pm

Lugar

Sala Seminarios 3er piso, DFI
Av Blanco Encalada 2008
Santiago, Chile
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