# Unitary representations of the Lorentz group

@article{Dirac1945UnitaryRO, title={Unitary representations of the Lorentz group}, author={Paul Adrien Maurice Dirac}, journal={Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences}, year={1945}, volume={183}, pages={284 - 295} }

Certain quantities are introduced which are like tensors in space-time with an infinite enumerable number of components and with an invariant positive definite quadratic form for their squared length. Some of the main properties of these quantities are dealt with, and some applications to quantum mechanics are pointed out

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Modern developments of atomic theory have required alterations in some of the most fundamental physical ideas. This has resulted in its being usually easier to discover the equations that describe…