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ALTERNATIVES. “There could be other expressions of the Equivalence Principle respecting the spirit of General Relativity but violating maximally its usual expression.” https://lnkd.in/daA2SgMy View in LinkedIn

PROBLEM OF NEGATIVE MASS. “Still we will see that General Relativity does predict gross violations of the Equivalence Principle as soon as negative mass components are allowed.” https://lnkd.in/daA2SgMy View in LinkedIn

TWEAKING RELATIVITY. “Truly enough, as soon as we express general relativity as a metric theory, with a single metric, it is difficult to see how gravity could distinguish matter from antimatter since according to the very formalism of a single metric, all particles must follow the same trajectory.” https://lnkd.in/daA2SgMy View in LinkedIn

VIOLATION OF EQUIVALENCE. “This will lead us to the Dirac-Milne universe, and a possible explanation of the repulsive gravity that we observe in cosmology, called Dark Energy for lack of better comprehension.” https://lnkd.in/daA2SgMy View in LinkedIn

NEGATIVE MASS. “General relativity violates maximally the usual expression of the Equivalence Principle as soon as the existence of negative mass, possibly as virtual constituents of the quantum vacuum, is allowed.” https://lnkd.in/daA2SgMy View in LinkedIn

CONSEQUENCES. “Price also demonstrates that, as soon as negative masses exist, the vacuum will become polarized. While this polarization will go completely unnoticed in weak gravitational fields, such as that of the Earth, in the strong field regime, for example near the horizon of a black hole, the behaviour predicted by general relativity will change dramatically.” https://lnkd.in/daA2SgMy View in LinkedIn

ANTIGRAVITY. “Could it be that antigravity, in the sense of antimatter “falling up”, is actually a prediction, which seems at first antinomic, of general relativity?” https://lnkd.in/daA2SgMy View in LinkedIn

SLIGHT ANTIGRAVITY. “Schiff’s argument that in case of antigravity, bodies should, according to their composition, undergo (slightly) different accelerations in a gravitational field.” https://lnkd.in/daA2SgMy View in LinkedIn

Two of the most important images in Western society, the 1888 Flammarion engraving, and Dürer’s 1514 Melancolia. View in LinkedIn

NEGATIVE MASS. “So, in complete contradiction with intuition, there are only two possible behaviors: a 100% violation of the principle of equivalence, or no violation at all!” https://lnkd.in/daA2SgMy View in LinkedIn