Comment to a paper of M. Villata on antigravity
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- Cabbolet, M.J.T.F. Astrophys Space Sci (2012) 337: 5. doi:10.1007/s10509-011-0939-8
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In a recent paper of M. Villata, it is claimed that “antigravity appears as a prediction of general relativity when CPT is applied.” However, the present paper argues that Villata puts the cart before the horse qua methodology, and that the resulting theory cannot be reconciled with the ontological presuppositions of general relativity. The conclusion is that Villata’s suggestion for the physics that might underlie a gravitational repulsion of matter and antimatter is not acceptable as a fundamental theory in its current state of development.