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SUMMARY:Gravitational Memory Charges of Supertranslation and Superrotation
  on Rindler Horizon - Professor Masahiro Hotta
DTSTART:20170203T130000Z
DTEND:20170203T140000Z
UID:TALK70082@talks.cam.ac.uk
CONTACT:Christopher Moore
DESCRIPTION:In a Rindler-type coordinate system spanned in a region outsid
 e of a black hole horizon\, we have nonvanishing classical holographic cha
 rges as soft hairs on the horizon for stationary black holes. Taking a lar
 ge black hole mass limit\, the spacetimes with the charges are described b
 y asymptotic Rindler metrics. We construct a general theory of gravitation
 al holographic charges for a (1+3)-dimensional linearized gravity field in
  the Minkowski background with Rindler horizons. Although matter crossing 
 a Rindler horizon causes horizon deformation and a time-dependent coordina
 te shift\, that is\, gravitational memory\, the supertranslation and super
 rotation charges on the horizon can be defined during and after its passag
 e through the horizon. It is generally proven that holographic states on t
 he horizon cannot store any information about absorbed perturbative gravit
 ational waves. However\, matter crossing the horizon really excites hologr
 aphic states. By using gravitational memory operators\, which consist of t
 he holographic charge operators\, we suggest a resolution of the no-clonin
 g paradox of quantum information between matter falling into the horizon a
 nd holographic charges on the horizon from the viewpoint of the contextual
 ity of quantum measurement.
LOCATION:Pavilion B Potter Room (B1.19)
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