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A longstanding mismatch between theory and experiment motivated an exquisite muon measurement. At last, a theoretical solution has arrived.

In all the Universe, only a few particles are eternally stable. The photon, the quantum of light, has an infinite lifetime. Or does it?

Even with quantum teleportation and the existence of entangled quantum states, faster-than-light communication still remains impossible.

Quantum uncertainty and wave-particle duality are big features of quantum physics. But without Pauli’s rule, our Universe wouldn’t exist.

Almost 100 years ago, an asymmetric pathology led Dirac to postulate the positron. A similar pathology could lead us to supersymmetry.

Don’t fall into the determinism trap. Everything is, in fact, random, says chemist Lee Cronin:

Physicists just can’t leave an incomplete theory alone; they try to repair it. When nature is kind, it can lead to a major breakthrough.

In all the Universe, only a few particles are eternally stable. The photon, the quantum of light, has an infinite lifetime. Or does it?

It’s not about particle-antiparticle pairs falling into or escaping from a black hole. A deeper explanation alters our view of reality.

Are quantum fields real, or are they simply calculational tools? These 3 experiments show that if energy is real, so are quantum fields.

Everything acts like a wave while it propagates, but behaves like a particle whenever it interacts. The origins of this duality go way back.

All matter particles can act as waves, and massless light waves show particle-like behavior. Can gravitational waves also be particle-like?

The matter that creates black holes won’t be what comes out when they evaporate. Will the black hole information paradox ever be solved?

Einstein tried to disprove quantum mechanics. Instead, a weird concept called entanglement showed that Einstein was wrong.

When it comes to predicting the energy of empty space, the two leading theories disagree by a factor of 100 googol quintillion.

From forming bound states to normal scattering, many possibilities abound for matter-antimatter interactions. So why do they annihilate?

How are we to deal with the quantization of spacetime and gravity?

Experiments tell us quantum entanglement defies space and time.

Practically all of the matter we see and interact with is made of atoms, which are mostly empty space. Then why is reality so… solid?

The very word “quantum” makes people’s imaginations run wild. But chances are you’ve fallen for at least one of these myths.

To Einstein, nature had to be rational. But quantum physics showed us that there was not always a way to make it so.

When black holes disappear, what happens to the stuff that fell in? Physicist Brian Cox explains.

The Multiverse fuels some of the 21st century’s best fiction stories. But its supporting pillars are on extremely stable scientific footing.

The central equation of quantum mechanics, the Schrödinger equation, is different from the equations found in classical physics.

Though quantum mechanics is an incredibly successful theory, nobody knows what it means. Scientists now must confront its philosophical implications.

Gravity defies quantum mechanics. What does that mean for a theory of everything?

There is no such thing as a void in the Universe.

Discrepancies between observations and theory regarding subatomic particles called muons may force scientists to rethink the quantum world.

If nature were perfectly deterministic, atoms would almost instantly all collapse. Here’s how Heisenberg uncertainty saves the atom.

When you combine the Uncertainty Principle with Einstein’s famous equation, you get a mind-blowing result: Particles can come from nothing.