#### Informal HET Seminar - Vladimir Rosenhaus, UC Berkeley - "AdS/CFT and the Black Hole Exterior"

:"In Lorentzian AdS/CFT there exists a mapping between local bulk operators and nonlocal CFT operators. In global AdS this mapping can be found through use of bulk equations of motion and allows the nonlocal CFT operator to be expressed as a local operator smeared over a range of positions and times. We argue that such a construction is not possible if there are bulk normal modes with exponentially small near boundary imprint. We show that the AdS-Schwarzschild background is such a case, with the horizon introducing modes with angular momentum much larger than frequency, causing them to be trapped by the centrifugal barrier. While one may have thought the bulk-boundary dictionary for low curvature regions, such as the exterior of a black hole, should be as in empty AdS, our results demonstrate otherwise."

**Location:**
PCTS Seminar Room

**Date/Time: **11/19/13
at
2:00 pm
- 11/19/13
at
3:00 pm

**Category: **High Energy Theory Seminar

**Department: **Physics