For a century, quantum theory has passed every experimental test, but physicists can’t agree on how to use it to paint a ...

Scientists have long sought evidence to refute string theory, but a new test seeks to disprove key aspects with help from the ...

A new study shows quantum entanglement follows universal rules across dimensions using thermal effective theory.

Quantum field theory, which had been used successfully to explain electromagnetism and the weak nuclear force, wasn’t cutting it, so physicists were eager for something new.

What is quantum physics? Put simply, it’s the physics that explains how everything works: the best description we have of the nature of the particles that make up matter and the forces with which they ...

In July 1925, physicist Werner Heisenberg wrote a letter to Wolfgang Pauli sharing his new ideas about what would eventually ...

But quantum theory provides the basis not only for cracking the cryptosystems at the heart of digital commerce, but also for a potential solution to the problem: a way entirely different from RSA ...

It doesn’t, of course. Quantum theory represents the ultimate outcome of superior logical reasoning, arriving at truths that could never be discovered merely by observing the visible world.

There, Heisenberg developed the framework of quantum mechanics. At the time, quantum theory was just a loose collection of ideas about the quirks of physics on the scale of atoms.

Quantum mechanics rules subatomic particles, while general relativity explains gravity’s role in shaping space and time. A complete theory of quantum gravity remains one of the biggest ...

Quantum physics explains the behavior of tiny particles like atoms and photons. General relativity, on the other hand, describes how gravity shapes the universe through the bending of space and time.

Let’s take the specific example of what might happen in standard quantum theory. Charlie, for example, treats Alice, her lab and the measurement she makes as one system that is subject to ...