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SUMMARY:Black holes\, fundamental information destruction\, and conservati
 on laws - Jonathan Oppenheim (Quantum Information Group\, DAMTP\, Universi
 ty of Cambridge)
DTSTART:20081010T120000Z
DTEND:20081010T130000Z
UID:TALK14351@talks.cam.ac.uk
CONTACT:Dr H K Kunduri
DESCRIPTION:Motivated in part by the black hole information paradox\, but 
 also by a general attempt to consider possible modifications to standard f
 ield theory\, we examine evolution laws in which pure states evolve to mix
 ed\nstates. Such theories have been previously rejected because of a tensi
 on between locality and conservation laws. Here we show that this tension 
 can be resolved in a relational framework.  We also discuss possible ways 
 to couple this theory to gravity\, and a generalisation of Noether's theor
 em.
LOCATION:Pavilion B Potter Room (B1.19)
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