Spinor Gravity

Details Spinor Gravity Spinor Gravity

2003-07-11

arxiv.org/abs/hep-th/0307109v3

Phys.Lett.B574:269-275,2003

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, LaTeX, v3: extended discussion and new references

Scientific paper

10.1016/j.physletb.2003.09.010

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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