Fast Scramblers, Horizons and Expander Graphs [PDF]
Jose L. F. Barbon, Javier M. MaganWe propose that local quantum systems defined on expander graphs provide a simple microscopic model for thermalization on quantum horizons. Such systems are automatically fast scramblers and are motivated from the membrane paradigm by a conformal transformation to the so-called optical metric.View original: http://arxiv.org/abs/1204.6435
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