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arXiv · 1109.1092

"Teleparallel" Dark Energy

Chao-Qiang Geng·Chung-Chi Lee·Emmanuel N. Saridakis·Yi-Peng Wu
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Abstract

Using the "teleparallel" equivalent of General Relativity as the gravitational sector, which is based on torsion instead of curvature, we add a canonical scalar field, allowing for a nonminimal coupling with gravity. Although the minimal case is completely equivalent to standard quintessence, the nonminimal scenario has a richer structure, exhibiting quintessence-like or phantom-like behavior, or experiencing the phantom-divide crossing. The richer structure is manifested in the absence of a conformal transformation to an equivalent minimally-coupled model.

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Chao-Qiang Geng, Chung-Chi Lee, Emmanuel N. Saridakis, Yi-Peng Wu. 2011-09-06. "Teleparallel" Dark Energy. https://doi.org/10.1016/j.physletb.2011.09.082

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