1210.7306 (I. B. Khriplovich et al.)

Cosmology constrains gravitational four-fermion interaction    [PDF]

I. B. Khriplovich, A. S. Rudenko

If torsion exists, it generates gravitational four-fermion interaction (GFFI). This interaction gets dominating on the Planck scale. If one confines to the regular, axial-axial part of this interaction, the results do not comply with the Friedmann-Robertson-Walker (FRW) cosmology for the spatial flat or closed Universe. In principle, the anomalous, vector-vector interaction could restore the agreement.

View original: http://arxiv.org/abs/1210.7306