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“School of Physics”

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Paper   IPM / P / 16260
School of Physics
  Title:   Flat space holography and the complex Sachdev-Ye-Kitaev model
  Author(s): 
1.  H.R. Afshar
2.  H. A. Gonzalez
3.  D. Grumiller
4.  D. Vassilevich
  Status:   Published
  Journal: Phys. Rev. D
  Vol.:  101
  Year:  2020
  Pages:   086024
  Supported by:  IPM
  Abstract:
We provide the first steps toward a flat space holographic correspondence in two bulk spacetime dimensions. The gravity side is described by a conformally transformed version of the matterless Callan-Giddings-Harvey-Strominger model. The field theory side follows from the complex Sachdev-Ye-Kitaev model in the limit of large specific heat and vanishing compressibility. We derive the boundary action analogous to the Schwarzian as the key link between gravity and field theory sides and show that it coincides with a geometric action discovered recently by one of us [H. R. Afshar, Warped Schwarzian theory, J. High Energy Phys. 02 (2020) 126].

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