What's up in

quantum physics

Art for "Why the Many-Worlds Interpretation Has Many Problems"
quantum physics

Why the Many-Worlds Interpretation Has Many Problems

The idea that the universe splits into multiple realities with every measurement has become an increasingly popular proposed solution to the mysteries of quantum mechanics. But this “many-worlds interpretation” is incoherent, Philip Ball argues in this adapted excerpt from his new book Beyond Weird.

Art for "Famous Experiment Dooms Alternative to Quantum Weirdness"
quantum physics

Famous Experiment Dooms Alternative to Quantum Weirdness

Oil droplets guided by “pilot waves” have failed to reproduce the results of the quantum double-slit experiment, crushing a century-old dream that there exists a single, concrete reality.

Art for "‘Quantum Atmospheres’ May Reveal Secrets of Matter"
quantum physics

‘Quantum Atmospheres’ May Reveal Secrets of Matter

A new theory proposes that the quantum properties of an object extend into an “atmosphere” that surrounds the material.

Art for "How Network Math Can Help You Make Friends"
Quantized Columns

The End of Theoretical Physics As We Know It

Computer simulations and custom-built quantum analogues are changing what it means to search for the laws of nature.

quantum physics

Closed Loophole Confirms the Unreality of the Quantum World

A quickly closed loophole has proved that the “great smoky dragon” of quantum mechanics may forever elude capture.

Illustration for "Real-Life Schrödinger’s Cats Probe the Boundary of the Quantum World"
quantum physics

Real-Life Schrödinger’s Cats Probe the Boundary of the Quantum World

Recent experiments have put relatively large objects into quantum states, illuminating the processes by which the ordinary world emerges out of the quantum one.

Illustration for thermodynamics
Abstractions blog

Quantum Correlations Reverse Thermodynamic Arrow of Time

A recent experiment shows how quantum mechanics can make heat flow from a cold body to a hot one, an apparent (though not real) violation of the second law of thermodynamics.

Photo of Stephen Hawking in 1979 in Princeton, New Jersey.
Abstractions blog

Why Stephen Hawking’s Black Hole Puzzle Keeps Puzzling

The renowned British physicist, who died at 76, left behind a riddle that could eventually lead his successors to the theory of quantum gravity.

An illustration of gravity as particles
quantum gravity

Physicists Find a Way to See the ‘Grin’ of Quantum Gravity

A recently proposed experiment would confirm that gravity is a quantum force.