Consequences of Propagating Torsion in Connection-Dynamic Theories of Gravity

Details Consequences of Propagating Torsion in Connection-Dynamic Theories of Gravity Consequences of Propagating Torsion in Connection-Dynamic Theories of Gravity

1994-03-30

arxiv.org/abs/gr-qc/9403058v2

Phys.Rev. D50 (1994) 3867-3873

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages plus one figure (plain TeX), MIT-CTP #2291. (Extraordinarily minor corrections.)

Scientific paper

10.1103/PhysRevD.50.3867

We discuss the possibility of constraining theories of gravity in which the connection is a fundamental variable by searching for observational consequences of the torsion degrees of freedom. In a wide class of models, the only modes of the torsion tensor which interact with matter are either a massive scalar or a massive spin-1 boson. Focusing on the scalar version, we study constraints on the two-dimensional parameter space characterizing the theory. For reasonable choices of these parameters the torsion decays quickly into matter fields, and no long-range fields are generated which could be discovered by ground-based or astrophysical experiments.

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