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Decelerating cosmologies are de-scramblers
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DOI：10.1007/JHEP08(2015)043.png)
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摘要
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Stationary observers in static spacetimes see falling objects spread exponentially fast, or fast-scramble, near event horizons. We generalize this picture to arbitrary cosmological horizons. We give examples of exponential fast-scrambling and power-law scrambling and de-scrambling as charges propagate freely near a horizon. In particular we show that when the universe is decelerating, information hidden behind the apparent horizon is de-scrambled as it re-enters the view of the observer. In contrast to the de Sitter case, the power-law scaling suggests that the microscopic dynamics of the horizon are local.
Keyword:
Cosmology of Theories beyond the SM
AdS-CFT Correspondence
Classical Theories of Gravity
期刊
IF:
5.5
论文数:
3.9W
被引数:
13.7W
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