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SUMMARY:Near-horizon geometries in supergravities with hidden symmetry - H
 ari Kunduri\, University of Alberta
DTSTART:20110415T130000Z
DTEND:20110415T140000Z
UID:TALK30563@talks.cam.ac.uk
CONTACT:David Kubiznak
DESCRIPTION:Associated to every stationary extremal black hole is a unique
  near-horizon geometry. These spacetimes are more tractable to analyze and
  crucially\, retain properties of the parent black hole. We consider the c
 lassification of near-horizon geometries in theories of gravity coupled to
  abelian gauge fields and uncharged scalars in four and five dimensions\, 
 with one and two commuting rotational symmetries respectively. Assuming th
 at the theory of gravity may be cast as a 3d non-linear sigma model (as is
  typically the case for ungauged supergravities)\, we show that the functi
 onal form of any such near-horizon geometry may be determined. We apply th
 is to five dimensional minimal supergravity\, focusing on the near-horizon
  geometries of yet to be found extremal black rings.
LOCATION:Pavilion B Potter Room (B1.19)
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