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arxiv: 1412.4674 · v2 · pith:YKGSN6SRnew · submitted 2014-12-15 · 🌀 gr-qc · astro-ph.CO· hep-th

Torsion gravity with non-minimally coupled fermionic field: some cosmological models

Stefano Vignolo , Sante Carloni , Luca Fabbri This is my paper
classification 🌀 gr-qc astro-ph.COhep-th
keywords cosmologicalgravitycouplingfermionicfieldmodelsnon-minimalsome
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We investigate some cosmological models arising from a non-minimal coupling of a fermionic field to gravity in the geometrical setting of Einstein-Cartan-Sciama-Kibble gravity. The role played by the non-minimal coupling together with torsion in facing problems such as cosmological singularity, inflation and dark energy is discussed.

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    In VEP formalism the off-shell spin connection admits a one-parameter family of conformal transformations interpolating between Nieh-Yan and conformally invariant torsion; dynamically generated torsion lacks well-defi...