Wednesday, January 9, 2013

1301.1588 (Richard J. Petti)

Derivation of Einstein-Cartan theory from general relativity    [PDF]

Richard J. Petti
General relativity cannot describe exchange of intrinsic and orbital angular momentum. In 1922 E. Cartan proposed extending general relativity by including affine torsion, which resolves this problem. In 1986 the author published a derivation of Einstein Cartan theory from general relativity with classical spin, with no additional assumptions. This paper summarizes the derivation and adds simpler explanations of the derivation and correction of a factor of 2.
View original: http://arxiv.org/abs/1301.1588

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