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SUMMARY:The Endpoint of Black Ring Instabilities and the Weak Cosmic Censo
 rship Conjecture - Markus Kunesch (DAMTP)
DTSTART:20160122T130000Z
DTEND:20160122T140000Z
UID:TALK62945@talks.cam.ac.uk
CONTACT:43345
DESCRIPTION:In this talk I will present concrete evidence that the weak co
 smic censorship conjecture can be violated in asymptotically flat spacetim
 es of five dimensions. This evidence was produced by numerically evolving 
 perturbed black rings. I will describe the evolution of perturbed black ri
 ngs for the whole range of ring thicknesses. For rings of intermediate thi
 ckness we discovered a new instability which causes the ring to collapse t
 o a black hole of spherical topology. For very thin rings the Gregory-Lafl
 amme instability becomes dominant and eventually gives the ring a fractal 
 structure of bulges connected by necks which become ever thinner over time
 . I will argue that this suggests that very thin black rings break and hen
 ce violate weak cosmic censorship.
LOCATION:Pavilion B Potter Room (B1.19)
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