# Nonsingular, big-bounce cosmology from spinor-torsion coupling

@article{Popawski2012NonsingularBC, title={Nonsingular, big-bounce cosmology from spinor-torsion coupling}, author={Nikodem J. Popławski}, journal={Physical Review D}, year={2012}, volume={85}, pages={107502} }

The Einstein-Cartan-Sciama-Kibble theory of gravity removes the constraint of general relativity that the affine connection be symmetric by regarding its antisymmetric part, the torsion tensor, as a dynamical variable. The minimal coupling between the torsion tensor and Dirac spinors generates a spin-spin interaction which is significant in fermionic matter at extremely high densities. We show that such an interaction averts the unphysical big-bang singularity, replacing it with a cusp-like… Expand

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