2014/02/28 by Giovanni Otalora · 1 citation
Physics and Astronomy · #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Dark energy #De Sitter universe #General relativity #Gravitation #Mathematical physics #Metric expansion of space #Physics #Quantum mechanics #Quintessence #Scalar field #Spacetime #Theoretical physics #Torsion (gastropod) #Universe #gr-qc
paper · pdf · doi:10.1142/s0218271816500255
published as International Journal of Modern Physics D International Journal of Modern Physics D, Vol. 25, No. 2 (2016) 1650025 (15 pages) · 15 pages, 2 figures, 3 tables
arxiv created 2015/11/27 · arxiv updated 2015/11/30 · openalex publication_date 2015/12/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Although equivalent to general relativity, teleparallel gravity (TG) is conceptually speaking a completely different theory. In this theory, the gravitational field is described by torsion, not by curvature. By working in this context, a new model is proposed in which the four-derivative of a canonical scalar field representing dark energy is nonminimally coupled to the “vector torsion”. This type of coupling is motivated by the fact that a scalar field couples to torsion through its four-derivative, which is consistent with local spacetime kinematics regulated by the de Sitter group [Formula: see text]. It is found that the current state of accelerated expansion of the universe corresponds to a late-time attractor that can be (i) a dark energy-dominated de Sitter solution ([Formula: see text]), (ii) a quintessence-type solution with [Formula: see text], or (iii) a phantom-type [Formula: see text] dark energy.