Physics

The New York Times’ Siobhan Roberts highlights Prof. Frank Wilczek’s 1973 discovery of asymptotic freedom, a physical property that “allowed physicists to better understand the nuclear force,” according to Edward Witten at the Institute for Advanced Study, that may help solve the Yang-Mills Millennium Prize Problem. The discovery “indicated that proving the existence of quantum Yang-Mills theory in four-dimensional spacetime was central to understanding the mathematical framework of modern subatomic physics.”  

Joe Romm ‘82, PhD ‘87, “a physicist by training who became one of the most influential voices in the debate over climate change and how to stop it, using his blog to provide deep-dive insights and sharp-elbowed critiques,” died on Sept. 14, reports Clay Risen for The New York Times. “There’s nobody else like Joe Romm,” says Michael Mann, Romm’s colleague at the Penn Center. “There’s nobody else who brought all of these interlocking talents and proclivities together in the way that he did. That gave him such a unique voice, and it’s a voice that we sorely could use today.” 

MIT researchers have found that the gravitational pull of a red dwarf star is “siphoning material” from a brown dwarf star 300 to 500 light-years from Earth, writes reporter Will Dunham for Reuters. “This is the first observed example of this phenomenon,” says graduate student Aaron Householder. “The two objects are so close together that the entire orbit would fit inside the sun.” 

Research Scientist Julian Klein and Prof. Frances Ross speak with speak with Physics reporter Akashni Raghubar Latchanna about an electron microscopy technique they developed to move atoms within a material, creating new possibilities for engineering electrical, optical, and quantum properties. “If we can control the electronic or optical functions of the materials, we might potentially make those devices more brain-like, more portable, and less power-hungry,” Ross said. 

MIT astronomers have discovered a “star slowly and steadily consuming material from another low-mass object,” writes Catherine Stoddard for Fox News. “At the rate which the star is feeding, it’ll take likely hundreds of thousands, or maybe even billions of years for it to completely consume its nearby neighbor,” notes Stoddard.  

MIT researchers have discovered “a red dwarf [star] slowly and steadily consuming its orbital object, a brown dwarf [star],” in a process that could continue for millions of years, writes reporter Mary Randolph for the Scientific American. The discovery was “a happy accident,” says graduate student Aaron Householder. “We’re excited to see if we can find a star eating a planet or maybe even two planets eating each other—different types of combinations of these objects.”  

Prof. Max Tegmark joins Fox Business's “The Claman Countdown,” to discuss warning lawmakers about the risks of rogue AI at the “Pro-Human Assembly” in Washington. “It’s very obvious that if you make these things [AI] vastly smarter than humans in the next few years, give them robotic bodies, have millions and billions of them all over earth, and don’t understand how they work, we could lose control over them. So, let’s not do that,” says Tegmark. “We have very clear ideas for how we can control AI that cures cancer and [fuels] all sorts of other powerful tools. We want to build tools, not beings that are going to replace us.” 

Prof. Max Tegmark speaks to Fox Business about the need for government regulations on AI. AI agents “have goals; they’re actively pursuing them and being incredibly creative about getting things done, even if it wasn’t the way you wanted,” says Tegmark. “Put that together with robotic bodies, and you’ve got yourself a species. If they’re vastly smarter than us, which is the goal of these companies, then they can not only do hacking, they can go online and hire a bunch of humans to work for them.”  

The Boston Globe’s Hiawatha Bray spotlights Prof. Max Tegmark speaking at the “Pro-Human Assembly” in Washington, an event advocating for government regulations on AI, sponsored by Tegmark’s Future of Life Institute. “We are here today because we know that what’s up next is a fork in the road,” said Tegmark at the assembly. “We know that the future of AI is not inevitable. It is for us to decide.”  

Prof. Tracy Slatyer speaks to CNN’s Jacopo Prisco about the possibility that a LUX-ZEPLIN device, containing 7 active metric tons of liquid xenon at the Sanford Underground Research Facility in South Dakota, detected dark matter below Earth’s surface. “If this really is a dark matter signal, this could be a key that unlocks a great deal of information about new physics, as well as giving us a new way to measure the behavior of dark matter in the neighborhood of the Earth and possibly more broadly through the cosmos,” says Slatyer.  

Prof. Max Tegmark joins David Gura and Christina Ruffini, hosts of “Bloomberg This Weekend,” to discuss briefing the U.S Senate on regulating AI, in wake of recent reports of rogue agents. “I want to emphasize for anyone who gets stressed by this, that this dystopian future where we build smarter than human AIs and robots, super intelligence, and then they take over Earth, is not at all inevitable,” says Tegmark.  

Cailin Plunkett speaks to the Scientific American’s Mary Randolph about her research discovering that 14% of black holes may be hierarchical mergers, made from the merger of two smaller black holes. “At minimum, we’re finding evidence that there are these highly spinning and weirdly tilted black holes in the dataset, and the most straightforward way to interpret that, the Occam’s razor answer, is that these black holes probably came from previous mergers,” says Plunkett.  

MIT researchers have discovered that peptides can remain stable and form into, reports Earth.com’s Eric Ralls. “First, we were astounded that peptides remain stable at all in concentrated sulfuric acid, for many weeks on end,” says Prof. Mei Hong, an author on the study. “Even more remarkable was that they adopt specific three-dimensional structures instead of random shapes.” 

MIT researchers have discovered that peptides “not only survive in highly concentrated sulfuric acid but take on stable 3D conformations too,” writes Chemical & Engineering News’ Fionna Samuels. “The project started with a new collaboration between [Prof. Sara] Seager and the MIT chemist [Prof.] Mei Hong,” notes Samuels. “In the years since finding phosphine signals in Venusian clouds, Seager had been working her way through the building blocks of life—nucleic acids, amino acids, and lipids—to see if any survived concentrated acid exposure.”  

According to new research by MIT physicists, a laser able to capture neutrinos, abundant yet intangible particles in the universe, is likely impossible to build, writes New Scientist’s Karmela Padavic-Callaghan. “The key to the neutrino laser proposal was a memory effect: when an atom in the BEC (Bose-Einstein condensate) emitted a neutrino, it would be more likely to continue emitting more neutrinos in the same direction, thus pushing them into a beam, because the quantum state that all the ultracold atoms share would retain a trace of that first emission,” Padavic-Callaghan explains. “[Prof. Wolfgang] Ketterle and his colleagues showed that this memory, although present, would be about 10,000 billion times too brief to affect the neutrinos as intended.”