BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//talks.cam.ac.uk//v3//EN
BEGIN:VTIMEZONE
TZID:Europe/London
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:19700329T010000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:19701025T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CATEGORIES:DAMTP Friday GR Seminar
SUMMARY:Near-horizon geometries in supergravities with hid
den symmetry - Hari Kunduri\, University of Albert
a
DTSTART;TZID=Europe/London:20110415T140000
DTEND;TZID=Europe/London:20110415T150000
UID:TALK30563AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/30563
DESCRIPTION:Associated to every stationary extremal black hole
is a unique near-horizon geometry. These spacetim
es are more tractable to analyze and crucially\, r
etain properties of the parent black hole. We cons
ider the classification of near-horizon geometries
in theories of gravity coupled to abelian gauge f
ields and uncharged scalars in four and five dimen
sions\, with one and two commuting rotational symm
etries respectively. Assuming that the theory of g
ravity may be cast as a 3d non-linear sigma model
(as is typically the case for ungauged supergravit
ies)\, we show that the functional form of any suc
h near-horizon geometry may be determined. We appl
y this 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)
CONTACT:David Kubiznak
END:VEVENT
END:VCALENDAR