## Latest Articles

### Quantum Simulators Create a Totally New Phase of Matter

One of the first goals of quantum computing has been to recreate bizarre quantum systems that can’t be studied in an ordinary computer. A dark-horse quantum simulator has now done just that.

### The Algorithm That Lets Particle Physicists Count Higher Than Two

Through his encyclopedic study of the electron, an obscure figure named Stefano Laporta found a handle on the subatomic world’s fearsome complexity. His algorithm has swept the field.

### Laws of Logic Lead to New Restrictions on the Big Bang

Physicists are translating commonsense principles into strict mathematical constraints on how our universe must have behaved at the beginning of time.

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

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.

### Mathematicians Prove 2D Version of Quantum Gravity Really Works

In three towering papers, a team of mathematicians has worked out the details of Liouville quantum field theory, a two-dimensional model of quantum gravity.

### Graphene Superconductors May Be Less Exotic Than Physicists Hoped

Superconductivity has been discovered in graphene devices without any twists, suggesting the form of superconductivity in the material might be mundane after all.

### How Gravity Is a Double Copy of Other Forces

An enigmatic connection between the forces of nature is allowing physicists to explore gravity’s quantum side.

### A New Twist Reveals Superconductivity’s Secrets

An unexpected superconductor was beginning to look like a fluke, but a new theory and a second discovery have revealed that emergent quasiparticles may be behind the effect.

### Imaginary Numbers May Be Essential for Describing Reality

A new thought experiment indicates that quantum mechanics doesn’t work without strange numbers that turn negative when squared.