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Quantum Theory Rebuilt From Simple Physical Principles
...studied detached from its application to physics,” Chiribella said. This approach doesn’t address any underlying physics at all, but just considers how outputs are related to inputs: what we can...
Peering Into the Early Universe
...fields of astronomy, physics and cosmology. In addition to the planned experiments, scientists hope to be surprised by unforeseen, paradigm-shifting observations, the way a previous generation of four-meter telescopes discovered...
A Fluid New Path in Grand Math Challenge
...don’t fully capture the ocean’s physics.) “My mindset has certainly changed,” he said. A central insight of computer science is that, whenever a physical phenomenon is complex enough, it should...
A Bold Critic of the Big Bang’s ‘Smoking Gun’
In mid-March, a panel of four astrophysicists working on an experiment to probe the first moments of time held an extraordinary press conference at the Harvard-Smithsonian Center for Astrophysics (CfA)...
Quantum Computing Without Qubits
...but rather are designed to explore specific problems in quantum physics. A classical computer would have to run for thousands of years to compute the quantum equations of motion for...
A Grand Theory of Wrinkles
...but they don’t provide much insight into the underlying physics. “There are these huge programs where they basically just put everything and the kitchen sink into it, and then yeah,...
A Tricky Path to Quantum-Safe Encryption
...years. By exploiting the probabilistic rules of quantum physics, the devices could decrypt most of the world’s “secure” data, from NSA secrets to bank records to email passwords. Aware of...
‘Outsiders’ Crack 50-Year-Old Math Problem
...different to Kalai. It seemed connected to the famous Kadison-Singer problem, a question about the foundations of quantum physics that had remained unsolved for almost 50 years. Over the decades,...
Gravitational Waves Discovered at Long Last
...make waves in space-time. Rainer Weiss, a professor of physics at the Massachusetts Institute of Technology, around 1970. Still, Einstein and his colleagues continued to waffle. Some physicists argued that...