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Paper   IPM / Physic / 15848
School of Physics
  Title:   Interpolating Between Asymptotic and Near Horizon Symmetries
  Author(s): 
1.  D. Grumiller
2.  M.M. Sheikh-Jabbari
3.  C. Troessaert
4.  R. Wutte
  Status:   Published
  Journal: JHEP
  Vol.:  03
  Year:  2020
  Pages:   035
  Supported by:  IPM
  Abstract:
We develop basic tools and matching conditions to interpolate between asymptotic and near horizon symmetries. We focus on black holes in three dimensions. In particular, we match Brown-Henneaux boundary conditions at infinity, which yields two Virasoro algebras, to Heisenberg boundary conditions at the horizon yielding two u(1) current algebras. Our construction allows to equip BTZ black holes with soft hair excitations at the horizon invisible to the asymptotic observer.

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