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SUMMARY:Stochastic Einstein Locality : Part Two - Jeremy Butterfield\, Tri
 nity College
DTSTART:20061106T163000Z
DTEND:20061106T180000Z
UID:TALK5848@talks.cam.ac.uk
CONTACT:Jeremy Nicholas Butterfield
DESCRIPTION:Part 1 (a fortnight ago) introduced stochastic Einstein locali
 ty (SEL)\, which is a version of the idea of relativistic causality\, i.e.
  the idea that influences propagate at most as fast as light. SEL is simil
 ar to Reichenbach’s Principle of the Common Cause (PCC)\, and Bell’s L
 ocal Causality. We also discussed formulations of SEL for a fixed backgrou
 nd spacetime. \n\nIn this Part Two\, I will review this material (so havin
 g heard Part One is not necessary!). Then I will argue that SEL is violate
 d by the outcome dependence shown by Bell correlations\, both in quantum m
 echanics and in quantum field theory. It needs arguing\, in the light of s
 ome recent literature which argues that outcome dependence does not violat
 e the PCC.\n \nFinally\, I briefly discuss how to formulate relativistic c
 ausality if there is no fixed background spacetime. I will describe Kent
 ’s 2005 proposed experiment\, and the formulations of SEL in causal sets
  of the sort studied by Sorkin\, Dowker\, Brightwell\, Rideout Henson et a
 l.\n
LOCATION:Meeting Room 14\, Centre for Mathematical Sciences
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