Simultaneity,convention, and gauge freedom |
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| Authors: | Robert Rynasiewicz |
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| Affiliation: | 1. Department of Philosophy, University of Haifa, Haifa 31905, Israel;2. Arts and Sciences, University of Pittsburgh, 2604 Cathedral of Learning, Pittsburgh, PA 15260, USA;1. Joint Institute for Nuclear Research, Dubna, Russia;2. Laboratori Nazionali di Frascati dell? INFN, Frascati, Italy;3. California Institute of Technology, Pasadena, United States;4. Università “Guglielmo Marconi”, Roma, Italy;5. INFN Sezione di Pisa, Pisa, Italy;6. Dipartimento di Fisica dell’ Università di Siena, Siena, Italy;7. Dipartimento di Fisica dell’ Università di Pisa, Pisa, Italy;8. Fermi National Laboratory, Batavia, IL, USA;9. INFN Sezione di Lecce, Lecce, Italy;10. Università degli studi Roma Tre, Roma, Italy;1. INFN Section of Florence, Italy;2. University of Florence, Italy;3. IFAC-CNR, Italy;4. Ecole-Polytechnique, France;5. Solar-Terrestrial Environment Laboratory, Nagoya University, Japan;6. Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Japan;7. RISE, Waseda University, Japan;8. Graduate School of Science, Nagoya University, Japan;9. CERN, Switzerland;10. Kanagawa University, Japan;11. INFN Section of Catania, Italy;12. University of Catania, Italy;13. LBNL, Berkeley, USA;1. Tera Foundation, Novara, Italy;2. Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics, University of Bern, Bern, Switzerland |
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| Abstract: | ![]()
As is well known from Einstein (1905) the choice of a criterion for distant simultaneity is equivalent to stipulating one-way speeds for the transit of light. It is shown that any choice of non-standard synchrony is equivalent to a Lorentz local time boost. From this and considerations from the hole argument, it follows that there is a non-trivial sense in which distant simultaneity is conventional, at least to the extent that the “gauge freedom” arising in the hole argument is non-trivial. |
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