[PhilPhys] Reminder: Elise Crull (November 2on Zoom) Lisbon Philosophy of Physics Seminars

[Andrea Oldofredi]

Dear List Members,

On Wednesday November 2 Elise Crull (City College of New York & CUNY
Graduate Center) will give a talk at the Lisbon Philosophy of Physics
Seminars titled "*Temporal Entanglement & Indefinite Causal Structure*"
(abstract below).

These events are organized in the context of the activities of the LanCog
Research Group <https://cful.letras.ulisboa.pt/lancog/> at the Centre of
Philosophy of the University of Lisbon, and they will focus on the
foundations of quantum and spacetime physics.

The meeting will be held on Zoom (17:00-19:00 CET). If you have not
registered yet, you can do so here
<https://docs.google.com/forms/d/1pe9-CUZwKFA_uS0j-wD7bRQatIO-SdzxBqKlmkM6XOY/edit?usp=drive_web>
.

You can address any question to Andrea Oldofredi (
aoldofredi at letras.ulisboa.pt).

ABSTRACT:

Analyses of entanglement in both physics and philosophy have almost
exclusively focused on quantum correlations between spatially separated
systems, e.g. experimental violations of Bell’s inequalities. Of course
such experiments, occurring as they do within spacetime, suggest there is a
temporal component to quantum correlations. While it is difficult to
imagine what temporal entanglement might signify, this phenomenon clearly
deserves careful scrutiny.  The most work done to date along these lines
concerns the Leggett-Garg inequalities, which are often touted as the
“temporal analogue to Bell”. Recent critical studies convincingly argue
that Leggett-Garg tests fail as such, and anyway the focus of this
literature is decidedly not temporal entanglement.



In this talk I hope to shine some light on this neglected aspect of quantum
physics first by considering general features of entanglement, then
applying these to various measures of quantum correlations across time in
order to motivate a particular definition of temporal entanglement. Next I
examine the growing literature on indefinite causal structure in quantum
systems, and argue that these proposals -- apart from what they may or may
not indicate regarding cause -- do seem to involve temporal non-locality.

Best regards,

Andrea Oldofredi
----------

Dr. Andrea Oldofredi

Postdoc FCT

Internet Resources:
https://unil.academia.edu/AndreaOldofredi
https://www.researchgate.net/profile/Andrea_Oldofredi

Mailing Address:
University of Lisbon
Centre of Philosophy
Alameda da Universidade, 1600-214, Lisbon
Portugal
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