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arXiv · hep-th/0307109

Spinor Gravity

A. Hebecker·C. Wetterich
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Abstract

A unified description of all interactions could be based on a higher-dimensional theory involving only spinor fields. The metric arises as a composite object and the gravitational field equations contain torsion-corrections as compared to Einstein gravity. Lorentz symmetry in spinor space is only global, implying new goldstone-boson-like gravitational particles beyond the graviton. However, the Schwarzschild and Friedman solutions are unaffected at one loop order. Our generalized gravity seems compatible with all present observations.

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A. Hebecker, C. Wetterich. 2003-08-11. Spinor Gravity. https://doi.org/10.1016/j.physletb.2003.09.010

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