Phys. Rev. 130, 406–409 (1963)Commutation Relations and Conservation LawsReceived 16 October 1962; published in the issue dated April 1963 The response of a physical system to external electromagnetic and gravitational fields, as embodied in the electric current and stress tensor conservation laws, is used to derive the equal-time commutation relations for charge density and energy density. © 1963 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRev.130.406
DOI:
10.1103/PhysRev.130.406
PACS:
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