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arxiv: 1005.3039 · v2 · submitted 2010-05-17 · 🌌 astro-ph.CO · gr-qc

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Einstein's Other Gravity and the Acceleration of the Universe

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classification 🌌 astro-ph.CO gr-qc
keywords gravityaccelerationcurvatureeinsteinscalartorsionactionavoiding
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Spacetime curvature plays the primary role in general relativity but Einstein later considered a theory where torsion was the central quantity. Just as the Einstein-Hilbert action in the Ricci curvature scalar R can be generalized to f(R) gravity, we consider extensions of teleparallel, or torsion scalar T, gravity to f(T) theories. The field equations are naturally second order, avoiding pathologies, and can give rise to cosmic acceleration with unique features.

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Cited by 2 Pith papers

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  2. Quasinormal modes of the thick braneworld in $f(T)$ gravity

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    In a thick braneworld model with f(T) = T + α T², the parameter α induces brane splitting and alters the decay rates of quasinormal modes, with two numerical methods agreeing on the low-overtone spectrum.