Evolution of the fine-structure constant in runaway dilaton models

Martinelli, Matteo, Calabrese, Erminia ORCID: https://orcid.org/0000-0003-0837-0068 and Martins, Carlos J.A.P. 2017. Evolution of the fine-structure constant in runaway dilaton models. Presented at: 14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, 12 -18 July 2015. Published in: Bianchi, Massimo, Jantzen, Robert T. and Ruffini, Remo eds. 14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories: Proceedings of the MG14 Meeting on General Relativity. The Fourteenth Marcel Grossmann Meeting. World Scientific Publishing, pp. 3664-3669. 10.1142/9789813226609_0477

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Abstract

We use a combination of simulated cosmological probes as expected from the forthcoming European Extremely Large Telescope (E-ELT), to constrain the class of string-inspired runaway dilaton models of Damour, Piazza and Veneziano. We improve previously existing analyses investigating in detail the degeneracies between the parameters ruling the coupling of the dilaton field to the other components of the universe, and we consider three different scenarios for the dark sector couplings. We show the constraining power of the E-ELT and highlight how degeneracies will affect this in different fiducial cosmologies.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	World Scientific Publishing
ISBN:	9789813226609
Date of First Compliant Deposit:	11 January 2019
Last Modified:	24 Oct 2022 08:38
URI:	https://orca.cardiff.ac.uk/id/eprint/118320

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