Phase-space analysis of teleparallel dark energy

By Chen Xu, Emmanuel N. Saridakis, G. Leon. 2012

216 citations recorded by the source corpus.

We perform a detailed dynamical analysis of the teleparallel dark energy scenario, which is based on the teleparallel equivalent of General Relativity, in which one adds a canonical scalar field, allowing also for a nonminimal coupling with gravity. We find that the universe can result in the quintessence-like, dark-energy-dominated solution, or to the stiff dark-energy late-time attractor, similarly to standard quintessence. However, teleparallel dark energy possesses an additional late-time solution, in which dark energy behaves like a cosmological constant, independently of the specific values of the model parameters. Finally, during the evolution the dark energy equation-of-state parameter can be either above or below -1, offering a good description for its observed dynamical behavior and its stabilization close to the cosmological-constant value.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/71340be3d36cc2391ba9221d76d2a245901e4c72

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Citations in the corpus

Solar system constraints on f(T) gravity (2012, background): “…(2011), Atazadeh& Darabi (2012), Farajollahi et al. (2012), Yang et al. (2012), Karami & Abdolmaleki (2012a), Karami & Abdolmaleki (2012b), Xu et al (2012), Bamba et al. (2012b), Setare & Houndjo (2012), Liuet al. (2012), Wu & Yu (2010b), Bengochea (2011), Gonzalez et al. (2012), Daouda…”
Teleparallel theories of gravity: illuminating a fully invariant approach (2018, background): “It was shown that such a model leads to interesting cosmological dynamics consistent with observations yet distinct from f(T ) gravity or curvature-based analogues [51, 113–119].”
f(T) teleparallel gravity and cosmology (2015, methodology): “In order to transform the system to its autonomous form we introduce the auxiliary variables [581]:(4)”
Dynamical behavior in f (T, TG) cosmology (2014, methodology): “Therefore, in order to complete the phase space analysis we must extend our investigation with the analysis at infinity using the Poincaré projection method [66, 67].”