A Proposal for a Bohmian Ontology of Quantum Gravity |
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Authors: | Antonio Vassallo Michael Esfeld |
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Institution: | 1. Department of Philosophy, University of Lausanne, 1015, Lausanne, Switzerland 2. Institute of Philosophy, University of Warsaw, Krakowskie Przedmie?cie 3, 00-927, Warsaw, Poland
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Abstract: | The paper shows how the Bohmian approach to quantum physics can be applied to develop a clear and coherent ontology of non-perturbative quantum gravity. We suggest retaining discrete objects as the primitive ontology also when it comes to a quantum theory of space-time and therefore focus on loop quantum gravity. We conceive atoms of space, represented in terms of nodes linked by edges in a graph, as the primitive ontology of the theory and show how a non-local law in which a universal and stationary wave-function figures can provide an order of configurations of such atoms of space such that the classical space-time of general relativity is approximated. Although there is as yet no fully worked out physical theory of quantum gravity, we regard the Bohmian approach as setting up a standard that proposals for a serious ontology in this field should meet and as opening up a route for fruitful physical and mathematical investigations. |
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