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# theoretical physics

## Latest Articles

### Physicists Argue That Black Holes From the Big Bang Could Be the Dark Matter

It was an old idea of Stephen Hawking’s: Unseen “primordial” black holes might be the hidden dark matter. A new series of studies has shown how the theory can work.

### How Mathematical ‘Hocus-Pocus’ Saved Particle Physics

Renormalization has become perhaps the single most important advance in theoretical physics in 50 years.

### The Mathematical Structure of Particle Collisions Comes Into View

Physicists have identified an algebraic structure underlying the messy mathematics of particle collisions. Some hope it will lead to a more elegant theory of the natural world.

### The Physicist Who Slayed Gravity’s Ghosts

Claudia de Rham showed how theories of “massive gravity” could potentially get rid of the need for dark energy.

### Big Bounce Simulations Challenge the Big Bang

Detailed computer simulations have found that a cosmic contraction can generate features of the universe that we observe today.

### How the Bits of Quantum Gravity Can Buzz

New calculations show how hypothetical particles called gravitons would give rise to a special kind of noise.

### Spotting Quantum Black Holes in the Lab

Can we test speculations about how quantum physics affects black holes and the Big Bang?

### Why Gravity Is Not Like the Other Forces

We asked four physicists why gravity stands out among the forces of nature. We got four different answers.

### Black Hole Paradoxes Reveal a Fundamental Link Between Energy and Order

By chewing on the problems posed by “extremal” black holes, physicists have exposed a surprising and universal connection between energy and entropy.