Attractive spin-spin contact interactions in the Einstein-Cartan-Sciama-Kibble torsion theory of gravitation
Kerlick has obtained the unexpected result that the spin-spin contact interactions, which are characteristic of the Einstein-Cartan-Sciama-Kibble theory of gravitation, are attractive for the case of a totally antisymmetric spin angular momentum density τijk which, in particular, is appropriate for the Dirac field. Using our previous techniques-where the emphasis is on the use of Lagrangian densities as opposed to energy-momentum densities-we present a simple and explicit verification of this result. © 1977 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review D
O'Connell, R. (1977). Attractive spin-spin contact interactions in the Einstein-Cartan-Sciama-Kibble torsion theory of gravitation. Physical Review D, 16 (4), 1247. https://doi.org/10.1103/PhysRevD.16.1247