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Existence of the Schrödinger and Heisenberg Pictures

Abstract

IN a recent article in Nature1, a discussion on the foundations of quantum theory was presented by Dirac. He pointed out that the Schrödinger picture (S-picture) does not exist for quantized interacting fields such as quantum electrodynamics. Furthermore, the Heisenberg picture (H-picture) is assumed to exist with the H- and S-pictures not unitarily equivalent. We wish to point out here that there is a natural separable Hilbert space on which the S- and H-pictures both exist and are equivalent.

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SIMON, J., TAYLOR, J. Existence of the Schrödinger and Heisenberg Pictures. Nature 205, 1305–1306 (1965). https://doi.org/10.1038/2051305a0

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