2013/05/31 by Giovanni Otalora, G. Otalora · 1 citation
Physics and Astronomy · #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #astro-ph.CO #gr-qc
paper · pdf · doi:10.1088/1475-7516/2013/07/044
published as JCAP 07 (2013) 044 · 17 pages, 4 tables, 1 figure
openalex publication_date 2013/07/29 · arxiv created 2013/07/31 · arxiv updated 2013/09/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
It has been proposed recently the existence of a non-minimal coupling between a canonical scalar field (quintessence) and gravity in the framework of teleparallel gravity, motivated by similar constructions in the context of General Relativity. The dynamics of the model, known as teleparallel dark energy, has been further developed, but no scaling attractor has been found. Here we consider a model in which the non-minimal coupling is ruled by a dynamically changing coefficient α≡ f ,ϕ /( f ) 1/2 , with f (ϕ) an arbitrary function of the scalar field ϕ. It is shown that in this case the existence of scaling attractors is possible, which means that the universe will eventually enter these scaling attractors, regardless of the initial conditions. As a consequence, the cosmological coincidence problem could be alleviated without fine-tunings.