Month: September 2022

MAGNETIC BLACK HOLES. “These objects are metastable. The magnetic field can decay be creating pairs of magnetic monopoles. Even if magnetic monopoles do not exist, they could decay by emitting smaller magnetically charged black holes. This decay rate can be easily computed in the near horizon region by approximating the monopoles as point particles.” 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

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

What is this? Clue: it has swimming sperm. 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

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

NEAR IMPOSSIBLE. “Producing these black holes artificially looks very difficult, since it would involve producing or gathering lots of magnetic monopoles and then collapsing them into a black hole, even though same sign monopoles repel each other.” https://lnkd.in/dX6Fbwx View in LinkedIn

COSMIC MONSTERS. “Magnetically charged black holes “can last for the age of the universe for masses larger than about 0.1 kg if unit charge magnetic monopoles have the mass they have in a GUT theory. They can have very large magnetic fields that restore the electroweak symmetry around the black hole. This region can be relatively large.” https://lnkd.in/dX6Fbwx View in LinkedIn