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DTSTART:19700329T010000
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CATEGORIES:DAMTP Friday GR Seminar
SUMMARY:Global structure of spherically symmetric charged 
 scalar field spacetimes - Jonathan Kommemi\, DAMTP
DTSTART;TZID=Europe/London:20110603T130000
DTEND;TZID=Europe/London:20110603T140000
UID:TALK30887AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/30887
DESCRIPTION:In this talk\, we present recent results concernin
 g the spherical collapse of self-gravitating charg
 ed scalar fields.  The main result gives a complet
 e characterization of the future boundary of space
 time\, providing a starting point for studying the
  cosmic censorship conjectures.  As a simple corol
 lary\, we show that scenarios of `naked singularit
 y' formation by means of `super-charging' (near-)e
 xtremal Reissner-Nordstrom black holes are impossi
 ble.  We will also discuss results on trapped surf
 ace formation\, Cauchy horizon stability and space
 time extendibility. The main difficulty in delimit
 ing the boundary is isolated in proving a suitable
  global extension principle which effectively excl
 udes a broad class of singularity formation.  This
  suggests a new notion of `strongly tame' matter m
 odels which we introduce.  The boundary characteri
 zation given extends to any such `strongly tame' E
 instein-matter system.
LOCATION:Pavilion B Potter Room (B1.19)
CONTACT:David Kubiznak
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