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# theoretical physics

## Latest Articles

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

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.

### The ‘Weirdest’ Matter, Made of Partial Particles, Defies Description

Theorists are in a frenzy over “fractons,” bizarre, but potentially useful, hypothetical particles that can only move in combination with one another.

### How Bell’s Theorem Proved ‘Spooky Action at a Distance’ Is Real

The root of today’s quantum revolution was John Stewart Bell’s 1964 theorem showing that quantum mechanics really permits instantaneous connections between far-apart locations.

### A Video Tour of the Standard Model

The Standard Model is a sweeping equation that has correctly predicted the results of virtually every experiment ever conducted, as Quanta explores in a new video.

### How to Rewrite the Laws of Physics in the Language of Impossibility

Chiara Marletto is trying to build a master theory — a set of ideas so fundamental that all other theories would spring from it. Her first step: Invoke the impossible.

### ‘Last Hope’ Experiment Finds Evidence for Unknown Particles

Today’s long-anticipated announcement by Fermilab’s Muon g-2 team appears to solidify a tantalizing conflict between nature and theory. But a separate calculation, published at the same time, has clouded the picture.

### The Near-Magical Mystery of Quasiparticles

The zoo of spontaneously emerging particlelike entities known as quasiparticles has grown quickly and become more and more exotic. Here are a few of the most curious and potentially useful examples.

### 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.

### Quantum Mischief Rewrites the Laws of Cause and Effect

Spurred on by quantum experiments that scramble the ordering of causes and their effects, some physicists are figuring out how to abandon causality altogether.