Abstract
An extended “metric” tensor that is a function of an internal vectory a(x) leads to a spin-1 massless field of gravitational origin. It is shown that this new field vanishes in the linear approximation for the extended “metric.”
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On leave of absence from the Universidade de Brasilia.
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Oliveira, C.G. Extended class of metric tensors in relativity. Int J Theor Phys 24, 1081–1089 (1985). https://doi.org/10.1007/BF00671307
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DOI: https://doi.org/10.1007/BF00671307