Abstract
In Yang-Mills theory, it is shown that the Ricci tensor in the orbit space is always positively defined. Nevertheless, the orbit space cannot be considered as compact because it contains infinite-dimensional Euclidean hypersurfaces.
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Vergeles, S.N. Some properties of orbit space in Yang-Mills theory. Lett Math Phys 7, 399–406 (1983). https://doi.org/10.1007/BF00398761
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DOI: https://doi.org/10.1007/BF00398761