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ANTIGRAVITY TEST. “Importantly, a key test of the Dirac-Milne cosmology will soon be realized in the laboratory with cold antihydrogen atoms: the AEgIS, ALPHA-g and Gbar experiments at CERN are expected to provide tests of the antigravity hypothesis.” (2018). https://lnkd.in/daA2SgMy View in LinkedIn

1ST PROBLEM. “Taken at face value, there are two observational problems facing the Dirac-Milne universe. The first problem is related to an overproduction, by nearly a factor 10, of helium-3.” https://lnkd.in/daA2SgMy View in LinkedIn

RECONSIDERATION. “This led us to the study of the properties of the Dirac-Milne universe, a symmetric matter-antimatter universe, where antimatter is endowed with negative mass, an analog of the electron-hole system in a semi-conductor, providing a cosmology impressively concordant with our universe.” https://lnkd.in/daA2SgMy View in LinkedIn

PROPOSED SOLUTION. “On this basis, Benoit-Levy and Chardin proposed the so-called “Dirac-Milne” universe, a universe containing the same amount of matter and anti-matter (hence Dirac’s name), endowed respectively with positive and negative mass.” https://lnkd.in/daA2SgMy View in LinkedIn

Somewhat macabre dolls at the (excellent) Figueres Toy Museum, in Catalonia near the French border. View in LinkedIn

SENSES = BIOLOGICAL + CULTURAL. “Anthropological work focused on the senses is founded on the insistence that the senses are not merely a biological ground on which cultural meanings are constructed. Rather, the senses are always already fully cultural, and “sensory perception is a cultural as well as physical act.” https://lnkd.in/dTt-pFhv View in LinkedIn

SENSITIVITY NEEDED. “Antimatter particles in CRs represent a small fraction of the total flux, about 5 × 10(−3) for e+, 10(−5) for anti-p, 10(−7) for anti-D, less than 10(−8) for anti-4He or heavier antinuclei: these tiny fluxes, however, carry a great amount of information, since the origin of antiparticles is intimately related to fundamental processes.” (CR = cosmic rays). https://link.springer.com/content/pdf/10.1007/s10686-021-09708-w.pdf View in LinkedIn

EXCITING NEW ERA. “During the last 25 years, these questions have been addressed with increasing accuracy and experimental performances by a number space experiments like AMS-01, PAMELA, AGILE, FERMI, AMS-02, CALET, and DAMPE.” https://link.springer.com/content/pdf/10.1007/s10686-021-09708-w.pdf View in LinkedIn

THE QUESTIONS. “The theme poses three fundamental questions: 1) What is the origin of the Matter-Antimatter asymmetry in our Universe? 2) What is the particle nature of Dark Matter and does it contribute to the cosmic radiation? 3) Which is the origin, the acceleration and the propagation mechanism of Cosmic Rays?” https://link.springer.com/content/pdf/10.1007/s10686-021-09708-w.pdf View in LinkedIn

MACHINE 2.0. “A second generation, large acceptance, superconducting magnetic spectrometer proposed as mission in the context of the European Space Agency’s Voyage2050 long-term plan: the Antimatter Large Acceptance Detector In Orbit (ALADInO) would extend by about two orders of magnitude in energy and flux sensitivity the separation between charged particles/anti-particles, making it uniquely suited for addressing and potentially solving some of the most puzzling issues of modern cosmology.” https://link.springer.com/content/pdf/10.1007/s10686-021-09708-w.pdf View in LinkedIn