Gravitational four-fermion interaction on the Planck scale

I. B. Khriplovich

Gravitational four-fermion interaction on the Planck scale

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arxiv 1201.4226 v2 pith:7MMPBYVJ submitted 2012-01-20 gr-qc

I. B. Khriplovich This is my paper

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keywords interactionscalecontributionenergy-momentumfour-fermiongravitationalplancktensor

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The four-fermion gravitational interaction is induced by torsion, and gets essential on the Planck scale. On this scale, the axial-axial contribution dominates strongly in the discussed interaction. The energy-momentum tensor, generated by this contribution, is analyzed, as well as stability of the problem with respect to compression. The trace of this energy-momentum tensor can be negative.

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Infrared foundations for quantum geometry II: Catalogue of all torsion-like theories including new ghost-tachyon-free cases
hep-th 2025-07 conditional novelty 7.0 of 10

A systematic catalogue of symmetric pair-antisymmetric rank-three field theories yields 22 ghost-tachyon-free models, all propagating vector torsion and none propagating scalar or pseudoscalar torsion.

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