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quantum mechanics

An illustration of gravity as particles
gravity

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

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

Quantum reconstruction
quantum mechanics

Quantum Theory Rebuilt From Simple Physical Principles

Physicists are trying to rewrite the axioms of quantum theory from scratch in an effort to understand what it all means. The problem? They’ve been almost too successful.

Tim Maudlin
Q&A

A Defense of the Reality of Time

Time isn’t just another dimension, argues Tim Maudlin. To make his case, he’s had to reinvent geometry.

Illustration: balloon modelling as a metaphor for entanglement
insights puzzle

Solution: ‘Taming Quantum Weirdness’

A simple analogue could offer insights into one of the most astonishing results of quantum mechanics.

2D knots illustration by James O'Brien
Quantized Columns

Inside the Knotty World of ‘Anyon’ Particles

A new class of quantum particle is about to emerge from the tangled considerations of quantum statistics.

Illustration: balloon modelling as a metaphor for entanglement
insights puzzle

How to Tame Quantum Weirdness

Can balloon animals help blunt uneasy feelings about “spooky action at a distance”?

Particle measurement GIF illustration
quantum mechanics

Experiment Reaffirms Quantum Weirdness

Physicists are closing the door on an intriguing loophole around the quantum phenomenon Einstein called “spooky action at a distance.”

Quantum Brain GIF
neuroscience

A New Spin on the Quantum Brain

A new theory explains how fragile quantum states may be able to exist for hours or even days in our warm, wet brain. Experiments should soon test the idea.

string theory

The Strange Second Life of String Theory

String theory has so far failed to live up to its promise as a way to unite gravity and quantum mechanics. At the same time, it has blossomed into one of the most useful sets of tools in science.