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A video of masks swirling around.
quantum computing

Major Quantum Computing Strategy Suffers Serious Setbacks

By Philip Ball
September 29, 2021
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So-called topological quantum computing would avoid many of the problems that stand in the way of full-scale quantum computers. But high-profile missteps have led some experts to question whether the field is fooling itself.

Colorful illustration in which a sphere divided into four quadrants is surrounded by spheres divided into halves and thirds.]
particle physics

‘Impossible’ Particle Discovery Adds Key Piece to the Strong Force Puzzle

By Charlie Wood
September 27, 2021
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The unexpected discovery of the double-charm tetraquark has given physicists a new tool with which to hone their understanding of the strongest of nature’s fundamental forces.

A 3D model showing red plumes in the mantle.
geophysics

A Massive Subterranean ‘Tree’ Is Moving Magma to Earth’s Surface

By Robin George Andrews
September 15, 2021
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Deep in the mantle, a branching plume of intensely hot material appears to be the engine powering vast volcanic activity.

quantum gravity

One Lab’s Quest to Build Space-Time Out of Quantum Particles

By Adam Becker
September 7, 2021
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For over two decades, physicists have pondered how the fabric of space-time may emerge from some kind of quantum entanglement. In Monika Schleier-Smith’s lab at Stanford University, the thought experiment is becoming real.

Illustration of various kinds of clocks floating against a pink background.
quantum information theory

The New Thermodynamic Understanding of Clocks

By Natalie Wolchover
August 31, 2021
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Investigations of the simplest possible clocks have revealed their fundamental limitations — as well as insights into the nature of time itself.

Q&A

This Physicist Discovered an Escape From Hawking’s Black Hole Paradox

By Natalie Wolchover
August 23, 2021
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The five-decade-old paradox — long thought key to linking quantum theory with Einstein’s theory of gravity — is falling to a new generation of thinkers. Netta Engelhardt is leading the way.

quantum physics

How Big Can the Quantum World Be? Physicists Probe the Limits.

By Philip Ball
August 18, 2021
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By showing that even large objects can exhibit bizarre quantum behaviors, physicists hope to illuminate the mystery of quantum collapse, identify the quantum nature of gravity, and perhaps even make Schrödinger’s cat a reality.

A grid of balls connected by lines in a triangular pattern.
condensed matter physics

Physicists Create a Bizarre ‘Wigner Crystal’ Made Purely of Electrons

By Karmela Padavic-Callaghan
August 12, 2021
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The unambiguous discovery of a Wigner crystal relied on a novel technique for probing the insides of complex materials.

Quantized Columns

How Steven Weinberg Transformed Physics and Physicists

By Nima Arkani-Hamed
August 11, 2021
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When Steven Weinberg died last month, the world lost one of its most profound thinkers.


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