Letter | Published:

Equivalence of the Schroedinger and Heisenberg Pictures

Nature volume 204, page 772 (21 November 1964) | Download Citation

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Abstract

H. S. PERLMAN assumes that H is a self-adjoint operator, operating in Hilbert space. This assumption is not valid in quantum electrodynamics. H, like the other dynamical variables, then operates on vectors in some kind of space, larger than a Hilbert space, the nature of which is unknown.

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Author notes

    • P. A. M. DIRAC

    Present address: Belfer Graduate School of Science, Yeshiva University, New York.

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  1. St. John's College, Cambridge.

    • P. A. M. DIRAC

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DOI

https://doi.org/10.1038/204772a0

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