Cosmology at the boundary of de Sitter using the dS/QFT correspondence

Dias, Mafalda (2011) Cosmology at the boundary of de Sitter using the dS/QFT correspondence. Physical Review D, 84 (2). 023512-1-023512-10. ISSN 1550-7998

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Using the dS/QFT correspondence in the context of inflation allows for the study of interesting, otherwise inaccessible physics. In particular, by studying inflation via its dual field theory at the boundary of the de Sitter space, it may be possible to study a regime of strongly coupled gravity at early times. The purpose of this work is to completely express cosmological observables in terms of the free parameters of a dual field theory and to compare them with CMB data. In this way, constraints on the observational parameters constrains the validity of the strongly coupled inflation picture by imposing limits on the parameters of the field theory. The fit with data defines a limit for the consistency and validity of the approach taken and shows that, within this limit, the model is almost unconstrained, but quite predictive, producing power spectra of density perturbations extremely near scale invariance.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QB Astronomy > QB0980 Cosmogony. Cosmology
Depositing User: Mafalda Dias
Date Deposited: 23 May 2014 09:05
Last Modified: 02 Jul 2019 20:20

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