Florida High Magnetic Field — Reentrant Superconductivity, Spin Flop, near gravitational magnetic fields,

APS Physics: Large-scale Scientific Facilities and Diplomacy at https://www.youtube.com/watch?v=qtKEWt-WuCo

Laura Greene,

I have been studying (looking for ways to create and maintain) high magnetic fields (over 400 Tesla) for more than 50 years now. Every few years I check to see what MagLab has been doing, but the website always seems a bit chaotic and incomplete. I really appreciate your talk as it put a few things into perspective.

I liked where you put (national, international, global) together. For the last 25 years I have been working on global and systemic issues that arise on the Internet. These communities working on global issues are formed from individuals and organizations in every country, more or less independently. Some of them transition “over night” to become permanent global networks , but many die out. Much of the progress in Science Technology Engineering Mathematics Computing Finance Governance Other (STEMCFGO) takes decades or longer, mostly because the ad hoc fields are not recognized as true global projects, so the many groups spend most of their effort reinventing the basics. If you ever watched where people compete to have many layers of humans standing on the shoulders of others, the number of layers is limited by human strength and coordination. It falls down. Small groups can catalyze growth, but it takes consistent effort.

I had not heard the term “reentrant magnetism” (spin flop) before. I am cleaning that up now. I did find recently that the high harmonic gain XUV and soft x-ray and some hard x-ray groups have been creating energy densities which imply magnetic fields in the hundreds of Tesla. The laser vacuum experiments will have energy densities comparable to magnetic fields of hundreds of Teslas. I cannot summarize off the top of my head, but I will try to spend today and see if the two are related. Rather if looks like the dynamic reentrant magnetic fields using fast sampling methods can be sorted out with machine learning methods that only have gotten efficient enough to do in near real time. That is AI language model related. (Making all human knowledge in the more common human languages is now possible, using AI assistance, Your global collaborations.)

I might suggest that you ought to look for some experiments that can run continuously (24/7) . Maybe you can use capillary size magnet bores and send a laser or plasma down the bore to monitor the fluctuations. Do it with software defined radio detection. The 16 bit 100 Msps (mega samples per second) methods are getting much less expensive. You should see variations that match the tidal gravitational acceleration changes that are most of the signal in a superconducting gravimeter. Three axis is best (three capillaries at right angles). I would say to do it in vacuum, but you really need magnetic moments with mass. Electrons are OK, but hard to get high free electron densities and higher frequencies used to be really expensive. Chromium and vanadium and atomic vapor. I am just writing things that come to mind. I will use this note to organize my search. I am rather excited, but after many decades, I will quickly settle down and just keep gathering and verifying, gather and organize, gather and keep looking.

Thank you.  If the magnetic field and the gravitational field share the same underlying potential, that will show up in places like this. But the gravitational energy density is so large at the Earth’s surface, fluctuates and changes constantly at small scales.  It is hard to get 380 Tesla fields, “quiet and stable”, “high sampling rates”, high precision and months long experiments all together in one place.  Plus global collaborations for Earth wide correlations and validation. I liked your map of the high magnetic field research locations, if it is low cost and stable, maybe many of them could help look.  The correlations are relatively easy, the math is not hard, the precise gravitational data is available, the fields are nearly perfect Newtonian so the physics is easy, LIGO could help, JPL said they would accept data from the networks for ground truthing their solar system ephemeris.  I found many of the gravity groups who could add to the magnet groups you have.  That is somewhere organized on ResearchGate.  The seismometer and magnetometer groups are reasonably organized, but many older sites need to upgrade for new methods from the last few years.  Many of the “quantum” detectors are probably picking up high frequency magnetic fluctuations.  Even some of the neutrino experiments (Maury Goodman, long baseline) there is some overlap. The only way I know to sort it out is global time of flight (speed of light and gravity) cross correlations over time.

Richard Collins, The Internet Foundation