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Nonlocal conserved quantities, balance laws, and equations of motion

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Abstract

A formalism is developed whereby balance laws are directly obtained from nonlocal (integrodifferential) linear second-order equations of motion for systems described by several dependent variables. These laws augment the equations of motion as further useful information about the physical system and, under certain conditions, are shown to reduce to conservation laws. The formalism can be applied to physical systems whose equations of motion may be relativistic and either classical or quantum. It is shown to facilitate obtaining global conservation laws for quantities which include energy and momentum. Applications of the formalism are given for a nonlocal Schrödinger equation and for a system of local relativistic equations of motion describing particles of arbitrary integral spin.

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Authors and Affiliations

  1. Physics Department, University of Hartford, 06117, West Hartford, Connecticut

    Laurence I. Gould

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  1. Laurence I. Gould
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Gould, L.I. Nonlocal conserved quantities, balance laws, and equations of motion. Int J Theor Phys 28, 335–364 (1989). https://doi.org/10.1007/BF00670207

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  • DOI: https://doi.org/10.1007/BF00670207

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