Physical Aspects of the Space-Time Torsion

Details Physical Aspects of the Space-Time Torsion Physical Aspects of the Space-Time Torsion

2001-03-13

arxiv.org/abs/hep-th/0103093v1

Phys.Rept.357:113,2002

Physics

High Energy Physics

High Energy Physics - Theory

107 pages, LaTeX, 4 figures using axodraw.sty. Version accepted for publication in Physics Reports

Scientific paper

10.1016/S0370-1573(01)00030-8

We review many quantum aspects of torsion theory and discuss the possibility of the space-time torsion to exist and to be detected. The paper starts, in Chapter 2, with an introduction to the classical gravity with torsion, that includes also interaction of torsion with matter fields. In Chapter 3, the renormalization of quantum theory of matter fields and related topics, like renormalization group, effective potential and anomalies, are considered. Chapter 4 is devoted to the action of particles in a space-time with torsion, and to possible physical effects generated by the background torsion. In particular, we review the upper bounds for the background torsion which are known from the literature. In Chapter 5, the comprehensive study of the possibility of a theory for the propagating completely antisymmetric torsion field is presented. We show, that the propagating torsion may be consistent with the principles of quantum theory only in the case when the torsion mass is much greater than the mass of the heaviest fermion coupled to torsion. Then, universality of the fermion-torsion interaction implies that torsion itself has a huge mass, and can not be observed in realistic experiments. In Chapter 6, we briefly discuss the string-induced torsion and the possibility to induce torsion action and torsion itself through the quantum effects of matter fields.

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