1307.4632 (Luca Fabbri)

The Least-Order Torsion-Gravity for Chiral-Spinor Fields; its induced
Cosmological-Constant Generation, Immirzi Parameter and Parity    [PDF]

Luca Fabbri

We consider the most general least-order derivative action for the torsional completion of gravitational backgrounds filled with chiral spinorial fields: we will analyze the torsionally-induced self-interactions in the formation of condensates with the cosmological-constant generation; we shall see that the Immirzi parameter will be swallowed by all other parameters, but even more importantly we shall see that there remains no violation of parity within the non-linear potentials determining the dynamics of the chiral fermion fields.

View original: http://arxiv.org/abs/1307.4632