Bergmann P.G., De Sabbata V. Spin in gravity. Is it possible to give an experimental basis to torsion?

International School of Cosmology and Gravitation XV Course. Erice, Italy 13 - 20 May 1997.Torsion and spin loom as possible extensions of Albert Einstein's theory of gravity, his general theory of relativity, but their existence and significance have not as yet been established. Why should
anyone care?That is a legitimate question, especially today, when all countries are looking for ways to trim their expenditures. And, programs of experimentation and observation of gravity are getting to be expensive!One major ground for pushing research in the direction of torsion, is the rapid progress of observational cosmology, along with its remaining major mysteries. Cosmological models have been investigated
for the past eighty years. The so-called cosmological principle, which asserts that on a sufficiently large scale the universe is both homogeneous and isotropic, in my opinion never was more than a preliminary working hypothesis; recent observations have cast doubts on its validity.Mankind is about to extend the range of extraterrestial exploration. Understanding the dynamics of large astronomical objects such as our galaxy will then become essential.EIH Theory and Noether's Theorem (P. G. Bergmann)
Torsion and The Weyl-Cartan Space Problem in Purely Affine Theory (H.-H. vonBorzeszkowski andH.-J. Treder)
Hestenes' Geometric Algebra and Real Spinor Fields (B. K. Datta and V. de Sabbata)
Evidence for Torsion in Gravity? (V. de Sabbata)
Modern Perspectives on Newtonian Gravity (G. T. Gillies)
Quantum Tests of Space-Time Structures (C. Lammerzahl)
Integrability of D-Dimensional Cosmo logical Models (V. R. Gavrilov and V. N. Melnikov)
World Spinors in Metric and Nonmetric Backgrounds (Y. Ne 'eman)
Physical Effects and Measurability of Spin-Torsion Interaction (P. I. Pronin)
Anomalous Spin I: Experiments with a Polarized-Mass Torsion Pendulum (R. С Ritter, G. T. Gillies and L. I. Winkler)
Anomalous Spin II: Search for Galactic Dark Matter Interacting with a Spin Pendulum (R. С Ritter, G T. Gillies and L. I. Winkler)
Project SEE (Satellite Energy Exchange): Proposed Space-Based Method for More Accurate Gravitational Measurements (A. J. Sanders andG. T. Gillies)
A Comparative Survey of Proposals for Space-Based Determination of the Gravitational Constant G (A. J. Sanders and G. T. Gillies)
Space-Based Measurements of Spin in Gravity (A. J. Sanders andG T. Gillies)
Mach's Principle and Torsion in General Relativity (YuXin (Alfred Yu))