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arXiv · 1502.05878

Attracted to de Sitter: cosmology of the linear Horndeski models

Prado Martin-Moruno·Nelson J. Nunes·Francisco S. N. Lobo
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Abstract

We consider Horndeski cosmological models, with a minisuperspace Lagrangian linear in the field derivative, that are able to screen any vacuum energy and material content leading to a spatially flat de Sitter vacuum fixed by the theory itself. Furthermore, we investigate particular models with a cosmic evolution independent of the material content and use them to understand the general characteristics of this framework. We also consider more realistic models, which we denote the "term-by-term" and "tripod" models, focusing attention on cases in which the critical point is indeed an attractor solution and the cosmological history is of particular interest.

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Prado Martin-Moruno, Nelson J. Nunes, Francisco S. N. Lobo. 2015-05-06. Attracted to de Sitter: cosmology of the linear Horndeski models. https://doi.org/10.1088/1475-7516%2F2015%2F05%2F033

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