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 ...

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.

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 ...

The breakthrough has reinvigorated an old and fundamental scientific ... More information: Berislav Buča, Unified Theory of Local Quantum Many-Body Dynamics: Eigenoperator Thermalization Theorems ...

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.