Prof. David Kaiser joins Grammy winning producer Jack Antonoff and host Matt White of Sing for Science to discuss the nature and perception of time. Kaiser helps illustrate, “the idea that we're experiencing things that can seem to take a long time or short time, and that has to do with our state in the world, and not only about what the clock is saying on the wall.”
Researchers from MIT have developed “sustainable, offshore, hydrodynamic,” artificial reef structures capable of dissipating “more than 95% of an incoming wave’s total energy,” reports Nick Warburton for Materials World. The design “comprises vertical cylinders with four rudder-like slats attached to them, so that water can flow through the structure to generate 'swirling masses of water' or large eddies,” explains Warburton.
MIT researchers have improved upon the diffusion models used in AI image generation, reports Alok Jha for The Economist. Working with electrically charged particles, the team created “Poisson flow generative models,” which “generate images of equal or better quality than state-of-the-art diffusion models, while being less error-prone and requiring between ten and 20 times fewer computational steps,” Jha explains.
Researchers at MIT have discovered the composition of primordial black holes, “potentially discovering an entirely new type of exotic black hole in the process,” reports Jacopo Prisco for CNN. “We were making use of Stephen Hawking’s famous calculations about black holes, especially his important result about the radiation that black holes emit,” says Prof. David Kaiser. “These exotic black holes emerge from trying to address the dark matter problem — they are a byproduct of explaining dark matter.”
Postdoctoral associate Adam Forrest Kay’s book “Escape From Shadow Physics: The Quest to End the Dark Ages of Quantum Theory,” is reviewed by Andrew Crumey for The Wall Street Journal. “Consistently interesting” and “energetically written,” the book, “eloquently explains the history behind hydrodynamic quantum analogs,” writes Crumey.
Prof. Sara Seager, Prof. Robert Langer and Prof. Nancy Kanwisher have been awarded the 2024 Kavli Prize for their work in the three award categories: astrophysics, nanoscience, and neuroscience, respectively, reports Michael T. Nietzel for Forbes. According to the Norwegian Academy of Science and Letters, this award honors scientists with outstanding research “that has broadened our understanding of the big, the small and the complex,” writes Nietzel.
Harrison White '50, PhD '55, “a theoretical physicist-turned-sociologist who upended the study of human relations and society” has died at age 94, reports Michael Rosenwald for The New York Times. “With his background in physics, Professor White viewed humans as nodes within social networks,” writes Rosenwald. “Those networks operated in complex ways that shaped economic mobility, financial markets, language and other social phenomena.”
Prof. Netta Engelhardt talks to New Scientist’s Thomas Lawton about the possibility of singularities existing outside black holes. Theorists can now probe singularities from a deeper perspective, using insights into the possible quantum foundations of gravity. This new approach “flips the script” on how we think about singularities, says Engelhardt.
Prof. Anna Frebel joins Arun Rath of WGBH’s All Things Considered to discuss her recent discovery of some of the universe’s oldest stars, an out-of-this-world identification made the help of MIT undergraduates Hillary Andales, Ananda Santos and Casey Fienberg. “When you meet someone new, you want to know what their name is, how old they are, maybe where they live and what they do, right?” says Frebel. “We do the same with all the astronomical objects in the sky.”
For the first time ever, researchers at MIT have observed electrons form “fractional quasiparticles without enabling the influence of a magnetic field,” reports Daniel Garisto for Quanta Magazine. This discovery “may carry the seeds of long-sought quasiparticles with stable memories that could underpin a new and powerful approach to quantum computing.”
The California Institute of Technology has announced the eight distinguished scientists who will be this year’s Brown Investigators, each receiving up to $2 million over five years to support research on fundamental challenges in the physical sciences, writes Michael T. Nietzel for Forbes. Recipient Prof. Nuh Gedik will, “develop a new kind of microscopy that images electrons photo-emitted from a surface while also measuring their energy and momentum.”
Prof. Seth Lloyd and other physicists have begun to show that in the quantum realm, theoretical routes to the past called time loops might be closer to reality, writes New Scientist’s Miriam Frankel. When first publishing his ideas about quantum time loops, Lloyd says he “probably wouldn’t have done it” given all the questions received about time travel, but now testing time loops is experimentally feasible.
Current AI models require enormous resources and often provide unpredictable results. But graduate student Ziming Liu and colleagues have developed an approach that surpasses current neural networks in many respects, reports Manion Bischoff for Scientific American. “So-called Kolmogorov-Arnold networks (KANs) can master a wide range of tasks much more efficiently and solve scientific problems better than previous approaches,” Bischoff explains.
Researchers at MIT and elsewhere have found that the sun’s magnetic field “could form much closer to the star’s surface than previously thought,” reports Will Sullivan for Smithsonian Magazine. “The findings could help improve forecasts of solar activity that can affect satellites, power grids and communications systems on Earth—and produce magnificent auroras,” explains Sullivan.
MIT scientists are working to fortify coastlines with “architected” reefs that can also provide habitats for fish and marine life, reports Ed Brown for TechBriefs. “We looked at the structure of these reefs and we found some similarities to what we had been doing in fluid mechanics. That led us to the idea of trying to make artificial reefs that we could architect and build in a very directed way,” says Prof. Michael Triantafyllou.