Effect of Spin-Torsion Interaction on Raychaudhuri Equation

Details Effect of Spin-Torsion Interaction on Raychaudhuri Equation Effect of Spin-Torsion Interaction on Raychaudhuri Equation

2008-07-06

arxiv.org/abs/0807.0898v1

Int.J.Mod.Phys.A24:5025-5032,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages LaTeX-file

Scientific paper

10.1142/S0217751X09046291

Raychaudhuri equation is generalized in the parameterized absolute parallelism geometry. This version of absolute parallelism is more general than the conventional one. The generalization takes into account the suggested interaction between the quantum spin of the moving elementary particle and the torsion of the background gravitational field. The generalized Raychaudhuri equation obtained contains some extra terms, depending on the torsion of space-time, that would have some effects on the singularity theorems of general relativity. Under a certain condition, this equation could be reduced to the original Raychaudhuri equation without any need for a vanishing torsion.

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