Composing and Causing Spacetime in Quantum Gravity
11 May 2022 3pm
Baptiste Le Bihan (University of Geneva)
On line seminar - to register, please send an email to firstname.lastname@example.org
According to a number of approaches in quantum gravity spacetime does not exist fundamentally. Rather, spacetime exists by depending on another, more fundamental, non-spatiotemporal structure. A prevalent opinion in the literature is that this dependence should not be analysed in terms of composition. We should not say, that is, that spacetime depends on an ontology of non-spatiotemporal entities in virtue of having them as parts. But is that really right? On the contrary, I will argue that a mereological approach to dependent spacetime is not only viable, but promises to enhance our understanding of the physical situation. I will then discuss some of the roles that causality might play in these scenarios. Based on a collaboration with Sam Baron.