Abstract
The requirement to present Dirac's Large Number Hypothesis in one system of units in which the resulting modifications to Einstein's theory are exhibited, led to the construction of generalizations of General Relativity based rigorously on the geometry of semisimple groups. The foundations of such a theory are discussed and some of their possible interpretations are presented.
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Halpern, L. Manifestations of group covariance in a metric theory. Found Phys 13, 297–310 (1983). https://doi.org/10.1007/BF01906179
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DOI: https://doi.org/10.1007/BF01906179