Null infinity and extremal horizons in AdS-CFT
Null infinity and extremal horizons in AdS-CFT
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AdS-CFT 中的零无穷大和极值视野
DOI:
10.1088/0264-9381/32/3/035008
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发表时间:
2015
影响因子:
3.5
通讯作者:
Hickling A
中科院分区:
文献类型:
--
作者:
Hickling A
We consider AdS gravity duals to CFT on background spacetimes with a null infinity. Null infinity on the conformal boundary may extend to an extremal horizon in the bulk. For example it does so for Poincaré–AdS, although does not for planar Schwarzschild–AdS. If null infinity does extend into an extremal horizon in the bulk, we show that the bulk near-horizon geometry is determined by the geometry of the boundary null infinity. Hence the'infra-red'geometry of the bulk is fixed by the large scale behaviour of the CFT spacetime. In addition the boundary stress tensor must have a particular decay at null infinity. As an application, we argue that for CFT on asymptotically flat backgrounds, any static bulk dual containing an extremal horizon extending from the boundary null infinity, must have the near-horizon geometry of Poincaré–AdS. We also discuss a class of boundary null infinity that cannot extend to a bulk extremal horizon, although we give evidence that they can extend to an analogous null surface in the bulk which possesses an associated scale-invariant'near-geometry'.
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3.5
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通讯作者:
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