What's up in

theoretical physics


A Seeker of Dark Matter’s Hidden Light

The astrophysicist Tracy Slatyer is searching for faint wisps of dark matter annihilating in the early universe — and perhaps in hiding places closer to home.

Signatories of a bet placed in 2011.
Abstractions blog

Supersymmetry Bet Settled With Cognac

The absence of supersymmetry particles at the Large Hadron Collider has settled a 16-year-old bet among physicists.

particle physics

What No New Particles Means for Physics

Physicists are confronting their “nightmare scenario.” What does the absence of new particles suggest about how nature works?


Moonshine Master Toys With String Theory

The physicist-mathematician Miranda Cheng is working to harness a mysterious connection between string theory, algebra and number theory.


Mining Black Hole Collisions for New Physics

The physicist Asimina Arvanitaki is thinking up ways to search gravitational wave data for evidence of dark matter particles orbiting black holes.


A Debate Over the Physics of Time

According to our best theories of physics, the universe is a fixed block where time only appears to pass.

Quantized Columns

How Feynman Diagrams Almost Saved Space

Richard Feynman’s famous diagrams weren’t just a way to do calculations. They represented a deep shift in thinking about how the universe is put together.

Abstractions blog

Rumors Cast Doubt on Diphoton Bump

Rampant rumors and a new analysis undercut hopes of a major discovery at the Large Hadron Collider.


An Explorer of Quantum Borderlands

Suchitra Sebastian’s searches for quantum anomalies have led to the potential discovery of a new building block of matter.