Bonn 2025 – scientific programme

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AGPhil: Arbeitsgruppe Philosophie der Physik

AGPhil 6: History and Philosophy of Physics

AGPhil 6.5: Talk

Wednesday, March 12, 2025, 18:00–18:15, HS XI ITW

Entanglement Swapping for Entanglement Realists — •Jørn Kløvfjell Mjelva — Department of Philosophy, Classics, History of Art and Ideas, University of Oslo, Norway

Delayed-choice entanglement swapping (DCES) experiments have been argued to undermine realism about entanglement (Healey, 2012). One response has been to argue that the correlations in DCES experiments have a different physical interpretation than the correlations in the non-delayed case (Egg, 2013). This strategy runs into problems when applied to cases of spacelike entanglement swapping, as it would appear to require one to either posit a privileged foliation of spacetime or otherwise accept that whether entanglement obtains is frame dependent (Glick, 2019). In this talk, I outline a realist-friendly account of entanglement swapping that circumvents this dilemma, based on a proposal by Ismael and Schaffer (2020) that explicates entanglement via the notion of a common ground. The issue of frame dependence is resolved by adopting the past light-cone criterion for property attribution and the correlations displayed in the spacelike entanglement swapping experiments are attributed to a joint common ground.

Keywords: Entanglement Swapping; Common Ground Explanations; Entanglement; Bell correlations