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How the Neutrino’s Tiny Mass Could Help Solve Big Mysteries
The KATRIN experiment is closing in on the mass of the neutrino, which could point to new laws of particle physics and reshape theories of cosmology. Of all the known...
Math Proof Draws New Boundaries Around Black Hole Formation
...density approaches infinity and known physics goes off the rails. In the 100-plus years since, physicists and mathematicians have explored the properties of these enigmatic objects from the perspective of...
How Space and Time Could Be a Quantum Error-Correcting Code
...conjectured in the Journal of High Energy Physics that space-time itself is a code — in anti-de Sitter (AdS) universes, at least. The paper has triggered a wave of activity...
Imaginary Numbers May Be Essential for Describing Reality
...predict the outcome of a famous quantum physics experiment known as the Bell test. The new research, which was posted on the scientific preprint server arxiv.org in January, finds that...
How (Relatively) Simple Symmetries Underlie Our Expanding Universe
Although Einstein’s theory of space-time seems more complicated than Newtonian physics, it greatly simplified the mathematical description of the universe. Isaac Newton and other premodern physicists saw space and time...
A Child’s Puzzle Has Helped Unlock the Secrets of Magnetism
People have known about magnets since ancient times, but the physics of ferromagnetism remains a mystery. Now a familiar puzzle is getting physicists closer to the answer. For a few...
Roberto Peccei and Helen Quinn, Driving Around Stanford in a Clunky Jeep
...or out — in clearing a path to inspiration. Four decades ago, Helen Quinn and Roberto Peccei took on one of the great problems in theoretical particle physics: the strong...
Dark Energy May Be Incompatible With String Theory
...awoke in Vienna and groggily scrolled through an online repository of newly posted physics papers. One title startled him into full consciousness. The paper, by the prominent string theorist Cumrun...
Joe Polchinski’s Restless Pursuit of Quantum Gravity
...or out — in clearing a path to inspiration. As a young professor at Harvard University in 1997, Juan Maldacena reshaped fundamental physics with the discovery that, as he put...