## Latest Articles

### The Mysterious Forces Inside the Nucleus Grow a Little Less Strange

The strong force holds protons and neutrons together, but the theory behind it is largely inscrutable. Two new approaches show how it works.

### Quantum Complexity Tamed by Machine Learning

If only scientists understood exactly how electrons act in molecules, they’d be able to predict the behavior of everything from experimental drugs to high-temperature superconductors. Following decades of physics-based insights, artificial intelligence systems are taking the next leap.

### Any Single Galaxy Reveals the Composition of an Entire Universe

In computer simulations of possible universes, researchers have discovered that a neural network can infer the amount of matter in a whole universe by studying just one of its galaxies.

### Cosmologists Parry Attacks on the Vaunted Cosmological Principle

A central pillar of cosmology — the universe is the same everywhere and in all directions — is surviving a storm of possible evidence against it.

### 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.