Philip Ball looks at how a little-known paper by Niels Bohr demonstrates the turmoil in physics on the brink of quantum ...

Today, it might be turning your computer off and on again. Quantum mechanics — the most successful and important theory in modern physics — is like that. It works wonderfully, explaining ...

New research shows that the second law of thermodynamics, which states entropy increases over time, also applies to closed ...

The old approach proposed by Franck and Teller ... In the new approach proposed by Egorov and based on a new fundamental physical theory—quantum‒classical mechanics, which takes into account ...

An international collaboration sheds new light on the relationship between quantum theory and thermodynamics. The research group demonstrated that while the laws of quantum theory alone do not ...

A new study published in Scientific Reports simulates particle creation in an expanding universe using IBM quantum computers, ...

In 1927, Werner Heisenberg was in Denmark working at Niels Bohr's research institute in Copenhagen. The two scientists worked closely on theoretical investigations into quantum theory and the ...

Armed with modern quantum theory, I began to uncover a new quantum dimension to life itself. A century-old mystery revisited In the 1920s, Gurwitsch's experiments revealed a startling phenomenon.

Quantum field theory marries the ideas of other quantum theories to depict all particles as “excitations” that arise in underlying fields. The British physicist Paul Dirac started the ball ...

Devised in 1935 by the Austrian physicist Erwin Schrödinger, this thought experiment was designed to shine a spotlight on the difficulty with interpreting quantum theory. Quantum theory is very ...

This is what is known as “quantum nonlocality,” where objects are influenced across distances (seeming beyond the speed of light) whereas classical physics follows local theory, the idea that ...