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Physicists Reveal a Quantum Geometry That Exists Outside of Space and Time
...quantum theory. (Note that these singularities are unrelated to the singularities thought to sit at the heart of black holes.) Singularities led Arkani-Hamed to the amplituhedron and associahedron in the...
If the Universe Is a Hologram, This Long-Forgotten Math Could Decode It
...fabric can’t be the whole story. Dying stars puncture it, creating intensely warped regions called black holes where the equations of general relativity break down. And even in calmer parts...
The #1 Clue to Quantum Gravity Sits on the Surfaces of Black Holes
...law of thermodynamics. That is, unless the black hole’s swelling surface area meant that its own entropy was increasing to make up the difference. The black hole’s area should therefore...
The Two Faces of Space-Time
...in the real universe, too. “The whole game of understanding quantum gravity is to figure out how all of this bulk physics, the interior of black holes, is mapped into...
The Logic That Must Lie Behind a New Physics
...We have these two conflicting pictures: quantum theory and general relativity. They’re saying different things about the world. So we want some coherence. But the places [like inside black holes...
The Thought Experiments That Fray the Fabric of Space-Time
These three imagined scenarios lead many physicists to doubt that space-time is fundamental. Back in 1981, Cameron Gordon introduced a new way to relate two knots — mathematical constructs modeled...
John Wheeler Saw the Tear in Reality
...a talk at the NASA Institute for Space Studies in New York, Wheeler gave them a name that stuck: black holes. Once christened, black holes were taken seriously, both as...
The Unraveling of Space-Time
This special issue of Quanta Magazine explores the ultimate scientific quest: the search for the fundamental nature of reality. Señor Salme for Quanta Magazine...
Do We Need a New Theory of Gravity?
...when we have to open eyes for something new. But we know something is not quite right in Einstein’s theory of general relativity. When it comes to black holes, for...