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 ...

Looks like we’re closer than ever to connecting general relativity and quantum mechanics. A new study suggests that when we ...

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) is ...

The second edition, of 1916, was different in important respects from the original work of 1904, the quantum theory having in the interval offered a way of escape from the difficulties surrounding ...

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 ...

The difficulty – and, for physicists, the fun – starts here. To begin with, there’s no single quantum theory. There’s quantum mechanics, the basic mathematical framework that underpins it ...