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SUMMARY:Contextuality and nonlocality: a unifying framework - Ana Belen Sa
 inz (University of Bristol)
DTSTART:20150219T141500Z
DTEND:20150219T151500Z
UID:TALK56849@talks.cam.ac.uk
CONTACT:William Matthews
DESCRIPTION:A problem that has caught the attention of the community durin
 g the past decades is that of how to characterise\, from more intuitive st
 atements\, the correlations that are observed in Nature. Moreover\, the st
 udy has also extended to that of understanding the probability of obtainin
 g certain outcomes when different (and perhaps incompatible) measurements 
 are performed on a single system. In this talk I present a new framework t
 o study these two phenomena (Nonlocality and Contextuality\, respectively)
  in a unified manner. This approach is based on graph theory\, which provi
 des us with tools to study different sets of probabilistic models\, such a
 s the classical\, quantum and no-signalling sets. I also present a set of 
 supra-quantum probabilistic models relevant to the problem of characterisi
 ng quantum correlations\, and discuss related open problems. 
LOCATION:MR4\,  Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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