= Newton–Wigner localization
{wiki=Newton–Wigner_localization}
Newton–Wigner localization is a concept in quantum mechanics that deals with the localization of quantum particles, especially in the context of relativistic quantum field theories. It was introduced by the physicists T.D. Newton and E.P. Wigner in the 1940s as a way to define the position of relativistic particles. In non-relativistic quantum mechanics, the position of a particle can be represented by the position operator in a straightforward manner.
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