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SUMMARY:The nature of time in a closed system - Dr Jonathan Oppenheim (DAM
 TP)
DTSTART:20070212T163000Z
DTEND:20070212T180000Z
UID:TALK6673@talks.cam.ac.uk
CONTACT:Jeremy Nicholas Butterfield
DESCRIPTION:That time evolution appears frozen is not only a consequence o
 f quantum\ngravity but appears in any theory where one tries to quantise a
  closed\nsystem.  In such a system\, time is no longer a parameter\, but i
 s\nrepresented by entanglement.  This strengthens the view that our physic
 al theories are incapable of describing time.  Furthermore\, the fact that
  time is represented by entanglement leads to a second interpretational is
 sue related to that found in measurement theory (and in contradiction to i
 t). I'll also discuss whether one can have a memory in such a system\, rel
 ationalism\, energy conservation\, and whether one can even measure the ti
 me ordering of two events.\n
LOCATION:Meeting Room 14\, Centre for Mathematical Sciences
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