Month: September 2022

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

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

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

SPLENDID GIRONA BORN SURREALIST, “Remedios Varo undertook an esoteric artistic path that would lead to the creation of a truly magical art, which would strive for the spiritual awakening of both artist and beholder, countering Breton’s detached approach and current theories of the ‘disenchantment’ of the modern world.” https://lnkd.in/d583gjzb View in LinkedIn

Remedios Varo’s special take on reality is surely no stranger than negative mass, antigravity and the quantum world? https://lnkd.in/d583gjzb View in LinkedIn

VERY SLOW LOSS. “For a black hole of the mass of our Sun, the evaporation timescale is of the order of 2 × 10(66) years. As we will see, it is mostly in strong fields, such as those occurring near the horizon of black holes, that this antigravity will lead to significant effects.” https://lnkd.in/daA2SgMy View in LinkedIn

ANTIGRAVITY. “Some authors have argued, notably in supersymmetric theories, that antigravity, meaning here a slightly different acceleration of antimatter with respect to matter in a gravitational field, is possible without implying any dissipation or instability.” https://lnkd.in/daA2SgMy View in LinkedIn

TEST OF ANTIGRAVITY. “If antimatter antigravitates, then, depending on the composition of the body used to test the equivalence principle, for example beryllium and uranium, two elements with rather different binding energies, these bodies should follow different trajectories in gravitational fields.” https://lnkd.in/daA2SgMy View in LinkedIn

LEVITATING ANTIMASS. “Richard Price noticed an extremely surprising property: whereas a negative mass falls exactly like a positive mass when it is without interactions, the bound system composed of a mass +m and a mass −m, equal and opposite, levitates and polarizes itself (Fig. 2), the negative mass lying slightly above the positive mass in the levitating system.” https://lnkd.in/daA2SgMy View in LinkedIn

THE PRICE OBSERVATION. “But as soon as the negative and positive masses differ even slightly in absolute value, the composite system always falls with exactly the same acceleration, respecting again the principle of equivalence: although the overall (inertial) mass of the system has decreased —it is equal to the algebraic sum of the two masses of the bound system—the trajectory of the composite system remains the same.” https://lnkd.in/daA2SgMy View in LinkedIn