Effective QFT and what it tells us about dynamical torsion

Details Effective QFT and what it tells us about dynamical torsion Effective QFT and what it tells us about dynamical torsion

2010-07-29

arxiv.org/abs/1007.5294v1

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, Accepted for publication in the Proceedings of the Fifth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, U

Scientific paper

The covariantly constant spacetime torsion is one of the fields which may break Lorentz and CPT symmetry. We review the previous works on the dynamical torsion in the framework of effective quantum field theory (QFT). It turns out that the existence of propagating torsion is strongly restricted by the QFT principles. In particular, the torsion mass must be much greater than the masses of all fermionic particles. In this situation, the main chance to observe torsion is due to some symmetry breaking which may, in principle, produce almost constant background torsion field.

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