Have We Lost Spacetime on the Way? Narrowing the Gap Between General Relativity and Quantum Gravity


Authors
Baptiste Le Bihan
University of Geneva
Niels Linnemann
University of Geneva
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 signifi cantly 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.
Keywords spacetime  space  time  quantum gravity  string theory  loop quantum gravity  hard problem of spacetime  empirical incoherence  emergence
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Reprint years 2019
DOI 10.1016/j.shpsb.2018.10.010
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References found in this work BETA

Duality and Ontology.Baptiste Le Bihan & James Read - 2018 - Philosophy Compass 13 (12):e12555.
Priority Monism Beyond Spacetime.Baptiste Le Bihan - 2018 - Metaphysica 19 (1):95-111.
Quantum Gravity: A Dogma of Unification?Kian Salimkhani - 2018 - In Alexander Christian, David Hommen, Nina Retzlaff & Gerhard Schurz (eds.), Philosophy of Science. European Studies in Philosophy of Science, vol 9. Cham: Springer. pp. 23-41.

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