Month: September 2022

COLLAPSE OF RELATIVITY. “The problem was motivated by a question about the limits of classical general relativity: For how long a time does classical GR hold during the evolution of a black hole?” (GR = general relativity). https://lnkd.in/dByfCJV View in LinkedIn

STUNNING. “This connection between black holes and complexity classes is unexpected, and in my opinion very remarkable. Broadly speaking it says that the longer classical general relativity describes the interior of black holes, the less quantum computers have power to solve PSPACE-complete problems.” Remarkable paper. https://lnkd.in/dByfCJV View in LinkedIn

BLACK HOLE LABS. “We discuss a cornucopia of potential astrophysical signatures and constraints on magnetically charged black holes of various masses. As recently highlighted, being potentially viable astrophysical candidates with immense electromagnetic fields, they may be ideal windows to fundamental physics, electroweak symmetry restoration, and nonperturbative quantum field theoretic phenomena.” https://lnkd.in/dif-jK3 View in LinkedIn

INTERESTING TRIVIA. “The monk Mumon ("No-gate"), in the thirteenth century, compiled forty-eight koans, following each with a commentary and a small "poem". This work is called "The Gateless Gate" or the Mumonkan ("No-gate barrier"). It is interesting to note that the lives of Mumon and Fibonacci coincided almost exactly: Mumon living from 1183 to 1260 in China, Fibonacci from 1180 to 1250 in Italy.” (Fibonacci sequence, such that each number is the sum of the two preceding ones). https://lnkd.in/dmfn9qW View in LinkedIn

A synchronized green blizzard that must have kept the birds awake at night with the rustling of unwrapping presents. View in LinkedIn

BLACK HOLE BINARIES. “We consider binary inspirals of both magnetic and neutral, and magnetic and magnetic, black hole pairs. The electromagnetic emissions and the gravitational waveform evolution, along with interblack hole separation, display distinct features.” https://link.aps.org/doi/10.1103/PhysRevD.103.023006 View in LinkedIn

BLACK HOLE INSPIRALS. “Many of the astrophysical signatures may be observationally glaring—for instance, even in regions of parameter space where no electroweak corona forms, owing to magnetic fields that are still many orders of magnitude larger than even magnetars, their consequent electromagnetic emissions will be spectacular during binary inspirals.” https://link.aps.org/doi/10.1103/PhysRevD.103.023006 View in LinkedIn

THE EDGE OF MATHEMATICS. “We discuss some properties of magnetic black holes in the Standard Model. These are solutions of the laws of physics as we know them, though they do not seem easy to produce.” https://lnkd.in/dX6Fbwx View in LinkedIn

“A MAGNETIC BLACK HOLE is a black hole with a magnetic charge. It is a solution of the Standard Model coupled to gravity. So it can be viewed a type of magnetic monopole that does not require any new physics.” https://lnkd.in/dX6Fbwx View in LinkedIn

EXOTIC BEASTS. “We will discuss extremal and near extremal black holes. Extremal magnetic black holes are more stable than their electric counterparts, since unit charge magnetic monopoles are much heavier than electrically charged particles, and are thus harder to pair create. In addition, an electrically charged black hole can be neutralized in conductive medium, while a magnetically charged one cannot be neutralized with ordinary matter.” https://lnkd.in/dX6Fbwx View in LinkedIn