The Einstein-Cartan-Elko system

Details The Einstein-Cartan-Elko system The Einstein-Cartan-Elko system

2006-07-21

arxiv.org/abs/gr-qc/0607088v1

AnnalenPhys.16:38-44,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, no figures

Scientific paper

10.1002/andp.200610216

The present paper analyses the Einstein-Cartan theory of gravitation with Elko spinors as sources of curvature and torsion. After minimally coupling the Elko spinors to torsion, the spin angular momentum tensor is derived and its structure is discussed. It shows a much richer structure than the Dirac analogue and hence it is demonstrated that spin one half particles do not necessarily yield only an axial vector torsion component. Moreover, it is argued that the presence of Elko spinors partially solves the problem of minimally coupling Maxwell fields to Einstein-Cartan theory.

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