Quantum physics just took a leap from theory to reality! Empa researchers have, for the first time, successfully built a long ...

It was a product of what is now labelled the old quantum theory — a period of ad hoc theorizing between 1900 and 1925 that led to the introduction of a consistent theory of quantum mechanics in ...

What makes something quantum? This question has kept a small ... and Nobel laureate Hendrik Lorentz criticized the spin theory, Uhlenbeck got cold feet and wanted to retract the paper.

The size of a quantum is indicated by a tiny number h, now known as Planck’s constant. [ The search for ‘stringy physics’, a unified theory that goes beyond quantum mechanics and general ...

In a new Physical Review Letters study, researchers propose an experimental approach that could finally determine whether gravity is fundamentally classical or quantum in nature.

Physics has a problem—their key models of quantum theory and the theory of relativity do not fit together. Now, Dr. Wolfgang Wieland from Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU ...

The breakthrough has reinvigorated an old and fundamental scientific ... More information: Berislav Buča, Unified Theory of ...

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 ...

Physicists have proposed a radical approach that questions decades of belief about how gravity, spacetime, and quantum mechanics fit together.