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SUMMARY:Zeno goes to Copenhagen - Kelvin McQueen
DTSTART:20200123T141500Z
DTEND:20200123T151500Z
UID:TALK128326@talks.cam.ac.uk
CONTACT:Adrian Kent
DESCRIPTION:Measurement-collapse interpretations of quantum mechanics [MCI
 s] take the orthodox textbook formulation of quantum mechanics literally. 
 In particular\, they entail that collapse is a real physical process that\
 nis caused by measurement. The standard objection to MCIs is the measureme
 nt problem: 'measurement' is too vague to be used in the formulation of a 
 physical theory. However\, this objection is inconclusive. For example\, W
 igner showed how 'measurement' could be analyzed in terms of conscious obs
 ervation\, and it is possible to make this latter notion precise in terms 
 of modern mathematical theories of consciousness such as the integrated in
 formation theory.\n\nHere\, I pose a more serious objection to MCIs based 
 on the the quantum Zeno effect.  The objection can be posed as a dilemma: 
 in MCIs\, either measurement can superpose or it cannot.  If it can the dy
 namics are ill-defined\;\nif it cannot\, then measurements can never start
  or finish. I conclude by considering an MCI-like theory that avoids the d
 ilemma by combining the integrated information theory of consciousness wit
 h the continuous\nspontaneous localization theory of collapse.
LOCATION:MR13\, Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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