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theoretical physics

particle physics

Grand Unification Dream Kept at Bay

Physicists have failed to find disintegrating protons, throwing into limbo the beloved theory that the forces of nature were unified at the beginning of time.

LHC Collision Events - Visualization
Abstractions blog

The Math That’s Too Difficult for Physics

How do physicists reconstruct what really happened in a particle collision? Through calculations that are so challenging that, in some cases, they simply can’t be done. Yet.

mathematical physics

Strange Numbers Found in Particle Collisions

An unexpected connection has emerged between the results of physics experiments and an important, seemingly unrelated set of numbers in pure mathematics.

Neutron-scattering image of a “spin ice” material created in 2009 that contains particles analogous to magnetic monopoles.
Abstractions blog

Can Analogies Reveal the Laws of Physics?

So-called “analogue experiments” are becoming increasingly common in physics, but do they teach or mislead?

quantum gravity

What Sonic Black Holes Say About Real Ones

Can a fluid analogue of a black hole point physicists toward the theory of quantum gravity, or is it a red herring?

Pencils Down: Experiments in Education

A Wormhole Between Physics and Education

The theoretical particle physicist Helen Quinn has blazed a singular path from the early days of the Standard Model to the latest overhaul of science education in the United States.

string theory

The Strange Second Life of String Theory

String theory has so far failed to live up to its promise as a way to unite gravity and quantum mechanics. At the same time, it has blossomed into one of the most useful sets of tools in science.

Q&A

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.