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EPR and the 'Passage' of Time

Weinert, Friedel (2013) EPR and the 'Passage' of Time. Philosophia Naturalis, 50 (2). pp. 173-199. ISSN ISSN 0031-8027


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The essay revisits the puzzle of the ‘passage’ of time in relation to EPR-type measurements and asks what philosophical consequences can be drawn from them. Some argue that the lack of invariance of temporal order in the measurement of a space-like related EPR pair, under relativistic motion, casts serious doubts on the ‘reality’ of the lapse of time. Others argue thatcertain features of quantum mechanics establisha tensed theory of time – understood here as Possibilism or the growing block universe. The paper analyzes the employment of frame-invariant entropic clocks in a relativistic setting and argues that tenselessness does not imply timelessness. But this conclusion does not support a tensed theory of time, which requires a preferred foliation. It is argued that the only reliable inference from the EPR example and the use of entropic clocks is an inference not just to a Leibnizian order of the succession of events but a frame-invariant order according to some selected clocks.

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Item Type: Published Article or Volume
Keywords: Covariance, Einstein-Podolsky-Rosen correlations (EPR), entropy, entropic clocks, Eternalism, invariance, ‘passage’ of time, Presentism, Possibilism
Depositing User: Friedel Weinert
Date Deposited: 06 May 2017 16:25
Last Modified: 06 May 2017 16:25
Item ID: 13025
Journal or Publication Title: Philosophia Naturalis
Publisher: Vittorio Klostermann
Official URL:
Date: October 2013
Page Range: pp. 173-199
Volume: 50
Number: 2
ISSN: ISSN 0031-8027

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