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Have we lost spacetime on the way? Narrowing the gap between general relativity and quantum gravity

Abstract : Important features of space and time are taken to be missing in quantum gravity, allegedly requiring an explanation of the emergence of spacetime from non-spatio-temporal theories. In this paper, we argue that the explanatory gap between general relativity and non-spatio-temporal quantum gravity theories might significantly be reduced with two moves. First, we point out that spacetime is already partially missing in the context of general relativity when understood from a dynamical perspective. Second, we argue that most approaches to quantum gravity already start with an in-built distinction between structures to which the asymmetry between space and time can be traced back.
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Submitted on : Tuesday, March 12, 2019 - 12:26:33 PM
Last modification on : Monday, February 22, 2021 - 1:39:59 PM
Long-term archiving on: : Thursday, June 13, 2019 - 3:06:26 PM

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Baptiste Le Bihan, Niels Linnemann. Have we lost spacetime on the way? Narrowing the gap between general relativity and quantum gravity. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics, Elsevier, 2019, 65, pp.112-121. ⟨10.1016/j.shpsb.2018.10.010⟩. ⟨hal-02064978⟩

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