Some extensions of the Einstein-Dirac equation

Details Some extensions of the Einstein-Dirac equation Some extensions of the Einstein-Dirac equation

2006-03-29

arxiv.org/abs/math/0603676v1

J.Geom.Phys. 56 (2006) 2573-2591

Mathematics

Differential Geometry

21pages

Scientific paper

10.1016/j.geomphys.2006.01.008

We considered an extension of the standard functional for the Einstein-Dirac equation where the Dirac operator is replaced by the square of the Dirac operator and a real parameter controlling the length of spinors is introduced. For one distinguished value of the parameter, the resulting Euler-Lagrange equations provide a new type of Einstein-Dirac coupling. We establish a special method for constructing global smooth solutions of a newly derived Einstein-Dirac system called the {\it CL-Einstein-Dirac equation of type II} (see Definition 3.1).

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