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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Numerical evolution of 5D asymptotically AdS space
times - Pretorius\, F (Princeton University)
DTSTART;TZID=Europe/London:20130917T090000
DTEND;TZID=Europe/London:20130917T094500
UID:TALK47157AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/47157
DESCRIPTION:Co-authors: Hans Bantilan (University of Colorado)
\, Stephen Gubser (Princeton University)\n\nI will
describe an approach to numerically solve Einstei
n gravity in 5-dimensional asymptotically Anti de
Sitter spacetimes (AdS). The motivation is the gau
ge/gravity duality of string theory\, with applica
tion to scenarios that on the gravity side are des
cribed by dynamical\, strong-field solutions. For
example\, it has been argued that certain properti
es of the quark-gluon plasma formed in heavy-ion c
ollisions can be modeled by a conformal field theo
ry\, with the dual description on the gravity side
provided by the collision of black holes. As a fi
rst step towards modeling such more general phenom
ena\, we initially focus on spacetimes with SO(3)
symmetry in the bulk\; i.e.\, axisymmetric gravity
\, dual to states with spherical or special confor
mal symmetry on the boundary. For a first applicat
ion we study quasi-normal ringdown of highly defor
med black holes in the bulk. Even though the initi
al states are far from equilibrium\, the boundary
state is remarkably well described as a hyd rodyna
mic flow from early times. The code is based on th
e generalized harmonic formulation of the field eq
uations\, and though this method has been shown to
work well in many asymptotically flat scenarios\,
there are unique challenges that arise in obtaini
ng regular\, stable solutions in asymptotically Ad
S spacetimes. I will describe these challenges\, a
nd the way we have addressed them.\n
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:Mustapha Amrani
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