Abstract
We find the stress-energy tensor of a perfect fluid in the 6-dimensional spacetime proposed by Cole. Using the weak-field Newtonian approximation of general relativity gives a constant of proportionality in Einstein’s field equations that differs by a factor of 4/6 from the usual one and shows that Cole’s extension of the Schwarzschild metric to 6 dimensions is not valid for a gravitating mass of “ordinary” matter. A subsequent evaluation of the deflection of starlight for the 6-d spacetime gives a result that is 4/6 of the 4-d result. We conclude that if spacetime is 6-dimensional, one must find a different way to deal with gravity.
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Cocke, W.J. (1997). The Stress-Energy Tensor and the Deflection of Light in 6-Dimensional General Relativity. In: Tifft, W.G., Cocke, W.J. (eds) Modern Mathematical Models of Time and their Applications to Physics and Cosmology. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5628-8_17
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DOI: https://doi.org/10.1007/978-94-011-5628-8_17
Publisher Name: Springer, Dordrecht
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