de Sitter spacetime from holographic flat spacetime with inexact bulk quantum mechanics

Document Type : Regular article


Graduate School of Human and Environmental Studies, Kyoto University


We argue that the flat spacetime with inexact quantum mechanics in it is dual to the de Sitter spacetime with exact quantum mechanics in it, and the positive cosmological constant of this de Sitter spacetime is in the second order of the degree of the violation of the bulk quantum mechanics in the flat spacetime.

The flat spacetime is holographic and has a dual time-contracted boundary conformal field theory with two redefined central charges at null infinity.

The vanishing smallness of the observed positive cosmological constant suggests the extraordinary exactness of the bulk quantum mechanics in the flat spacetime.


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Volume 2, Issue 3
We would like to dedicate this issue to the memory of Prof. M.R. Setare.
August 2022
Pages 71-80
  • Receive Date: 16 June 2022
  • Revise Date: 18 July 2022
  • Accept Date: 18 July 2022