The Quantum Theory of the Emission and Absorption of Radiation

@article{Dirac1927TheQT,
  title={The Quantum Theory of the Emission and Absorption of Radiation},
  author={Paul Adrien Maurice Dirac},
  journal={Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences},
  year={1927},
  volume={114},
  pages={243-265}
}
  • P. Dirac
  • Published 1 March 1927
  • Physics
  • Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences
The new quantum theory, based on the assumption that the dynamical variables do not obey the commutative law of multiplication, has by now been developed sufficiently to form a fairly complete theory of dynamics. One can treat mathematically the problem of any dynamical system composed of a number of particles with instantaneous forces acting between them, provided it is describable by a Hamiltonian function, and one can interpret the mathematics physically by a quite definite general method… 

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