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A Tale of Two Arrows

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Abstract

Two time arrows for scattering processes have been proposed in rigged Hilbert space quantum mechanics. One, due to Arno Bohm, involves preparations and registrations in laboratory operations and results in two semigroups oriented in the forward direction of time. The other, employed by the Brussels-Austin group, is more general, involving excitations and de-excitations of systems, and apparently results in two semigroups oriented in opposite directions of time. The relationship between these two arrows is discussed.

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Authors and Affiliations

  1. Department of Philosophy, Logic and Scientific Method, London School of Economics, Houghton Street, London, WC2A 2AE, United Kingdom

    Robert C. Bishop

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  1. Robert C. Bishop
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Bishop, R.C. A Tale of Two Arrows. International Journal of Theoretical Physics 42, 2371–2377 (2003). https://doi.org/10.1023/B:IJTP.0000005963.26315.b5

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  • DOI: https://doi.org/10.1023/B:IJTP.0000005963.26315.b5

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