Exploring the foundations of physics & cosmology with Zeeya Merali & Gabe Fitzpatrick, of the Foundational Questions Institute, FQxI.

At the edge of reality.
Joined July 2009
In the first of a series of short documentaries from FQxI, Professor Natalia Ares shows us her research at Oxford University that uses carbon nanotube machines to investigate how we can use information as a fuel.⁠ @NAresgroup @geoffreylondon ⁠ qspace.fqxi.org/videos/246/i… ⁠ #FQxI
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Quantum simulations of field-theory scattering require preparing particles and following their collision dynamics. A digital quantum simulation now reveals the inelastic production of particles in one-dimensional Ising field theory. nature.com/articles/s41567-0…
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Researchers have developed a detector that aims to tell the difference between ideas made by humans and those conjured by artificial intelligence go.nature.com/4ysTHsa
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What does it take for relativistic quantum field theory to emerge from a lattice system? Our new work connects this question to a resource from quantum information theory: nonstabilizerness, also referred as as “magic”. scirate.com/arxiv/2610.20790 The bridge is the structure of local observable algebras. Type III von Neumann factors are characteristic of relativistic quantum field theory. We prove that lattice stabilizer systems—states without magic—exclude type III factors from the central decomposition of their local algebras. For the hyperfinite factors of Araki, Woods and Powers, we establish a quantitative equivalence: the limiting factor is of type III precisely when the locally optimized min-relative entropy of magic diverges. In this setting, the required resource is therefore an infinite amount of magic. This gives a rigorous connection between a quantum information resource and the algebraic structure of quantum field theory, supporting the proposal that infinite magic is a necessary ingredient for a relativistic continuum to emerge. Warm thanks to Leo Shaposhnik, @lorenzo_leone_, @bittel_l, Dimitris Saraidaris, and @PhysicistAlex for the wonderful collaboration.
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On 6 October, James Maynard was nervously checking his phone under the table throughout dinner. He’d heard rumors of a tsunami heading for the shores of math. When he checked in one last time from bed, the swell struck: OpenAI had released more than 700 math papers, generated with an advanced version of its AI model. They appeared to topple hundreds of long-standing problems, forcing researchers to face the reality that no problem in math is off-limits for machines. At first, Maynard, a mathematician at the University of Oxford and recipient of the Fields Medal, math’s most prestigious prize, feared for colleagues whose work would be upended. But then he spotted a paper that offered progress on one of his favorite pastimes: the Riemann hypothesis, a puzzle about prime numbers and one of seven famed Millennium Prize Problems, often considered the most formidable in all of math. “I was like a kid at Christmas,” Maynard says. “Even if it was some scary monster giving me a gift, I was just so excited.” The release comes less than 1 month after OpenAI announced a solution to the Navier-Stokes equations, another Millennium Prize Problem. OpenAI’s latest proof solves only a weaker version of the Riemann hypothesis. But Maynard, who made the most recent notable Riemann advance in 2024, says it is “groundbreaking” and likely to have payoffs for other problems across math. “Within analytic number theory, it’s obviously the best headline result for the past 100 years in the field.” Learn more: scim.ag/4s9F8Ip
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An AI foundation model trained on collider data outperforms leading cosmology models using fewer simulated examples. The results show how knowledge learned from particle physics can improve predictions of cosmological parameters. More in PRX Intelligence: go.aps.org/4dDS1o1
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A big new Unbaffled video for you to get stuck into on a Friday night: youtu.be/fRa8gDCBTLE This one's a deep dive into the discovery of quarks and gluons, ft. interviews with some of the scientists who carried out the experiments at the Stanford Linear Accelerator.
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On the FQxI podcast in 2023, David Sloan explained why a truly new idea can take years or even decades to come together, and why that’s a problem when early-career researchers are pushed to publish fast.
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The @Nature study they were discussing has been argued over since a PhD student (@vincent_holst93) took a closer look at its data. @nicolakimjones has the full story: qspace.fqxi.org/articles/287… Archival film: Prelinger Archives and others, via @internetarchive. Piano: Salamander Grand Piano by Alexander Holm (CC BY 3.0). Animation: Gabe Fitzpatrick.
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Researchers show that orbital relaxation is incredibly short range — about 1 nm — in Ni/(Pt)Ti/Au heterostructures. The results settle an intense debate about orbital currents. Read the Letter: go.aps.org/4B7Mgck
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Are scientific breakthroughs waning? In 2023, a study on the cover of @Nature said papers had become far less likely to break new ground. Its critics, including @vincent_holst93, say that decline is largely down to bad data. Here is a chart, redrawn from their paper. A plotting bug left almost a million papers off one of the study's charts (the dotted bar). The bar it dropped was a weirdly anomalous spike of about a million papers at CD=1, the maximum and most disruptive category. Without them, the decline almost disappears. The study's authors (including @russellfunk) say a smaller decline is still there. Three years on, “it’s still not really clear who’s right,” says Stephen Curry, who advises @RoRInstitute.
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Borrowing an idea from one research discipline to solve a thorny problem in another is an age-old scientific trick. Charles Darwin’s theory of natural selection, for example, famously inspired algorithms in computer science that “evolve” solutions to complex problems. But such clever leaps are fleetingly rare. For #AI, however, hopping between fields can be a breeze. Researchers highlighted that ability with the release of 36 preprints produced with a single suite of AI tools called BootLoops. The so-called harness can be used with any large language model, such as Anthropic’s Claude or OpenAI’s ChatGPT. And in just 3 months, researchers used Claude outfitted with BootLoops to cross-pollinate at a massive scale, spotting—and precisely solving—problems in seemingly unrelated fields that share the same mathematical structures. The resulting papers range widely, from figuring out the age of sunspots, to analyzing government health policies, to attempting to decipher a mysterious medieval manuscript. Learn more: scim.ag/4ybX3zw
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