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SAND LINKS TO THE COSMOS. “Similarly, aspects of the CMB spectrum like non-Gaussianity may also show up as a feature of granular media observed experimentally. All-in-all, the assay portends an interesting future.” https://lnkd.in/dusKMKM View in LinkedIn

FRAME BY FRAME. “The spatial symmetries of granular interactions are manifest in every frame of the gravity analogue.” https://lnkd.in/dusKMKM View in LinkedIn

FEARLESS THINKING. “Perhaps one can also turn the analogy on its head, and use granular matter physics to explore phenomena that are yet unobserved in real cosmology. An example would be the existence of primordial gravitational waves which in the real universe are still shrouded in mystery.” https://lnkd.in/dusKMKM View in LinkedIn

THE BLACK HOLE. “The length scale rS characterizing this solution is called the Schwarzschild radius; r = rS is identified with the event horizon, and represents the boundary between events connected to asymptopia and those that are confined to the region r ≤ rS - the black hole region.” https://lnkd.in/dusKMKM View in LinkedIn

BEYOND EPHEMERAL. “A 100 kg black hole would evaporate in about 10(−12) seconds.” https://lnkd.in/dX6Fbwx View in LinkedIn

PROTON DECAY. “Because black holes do not preserve baryon number, these black holes can catalyze proton decay. Protons that fall into the black holes could be returned as positrons. The Q effectively two dimensional massless modes provide a large enhancement to this process, both because they are massless and because of they are many.” https://lnkd.in/dX6Fbwx View in LinkedIn

What is this? Clue: it has swimming sperm. View in LinkedIn

WORTH REPEATING. “The magnetic fields near the horizon can be very large. So these black holes naturally provide a physical setup with very large magnetic fields. These large fields can restore the electroweak symmetry in the near horizon limit.” Chew on that one. https://lnkd.in/dX6Fbwx View in LinkedIn

AS OLD AS THE UNIVERSE. “For a GUT monopole, Mmon ∼ 1017Gev, we find that for Q > 106 the lifetime is larger than the age of the universe. We get a similar answer if we assume that the unit charge magnetic black hole has a mass near the weak gravity upper bound. Of course, if the unit charge monopoles are lighter, then one would need to make the charge larger, and the black holes bigger, to ensure long lifetimes.” (Don’t worry about the symbols, get the gist). https://lnkd.in/dX6Fbwx View in LinkedIn