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Paper   IPM / Physic / 15349
School of Physics
  Title:   Complexity Growth Following Multiple Shocks
  Author(s): 
1.  M.R. Tanhayi
2.  R. Vazirian
3.  S. Khoeini-Moghaddam
  Status:   Published
  Journal: Phys. Lett. B
  Vol.:  790
  Year:  2018
  Pages:   49-57
  Supported by:  IPM
  Abstract:
In this paper by making use of the "Complexity=Action" proposal, we study the complexity growth after shock waves in holographic field theories. We consider both double black hole-Vaidya and AdS-Vaidya spacetimes and also a geometry with multiple shocks. We find that the Lloyd's bound is respected during the thermalization process in each of these geometries and at the late time the complexity growth saturates to its final value which is proportional to the energy of the final state. We conclude that the saturation value of complexity growth rate is independent of the initial temperature and in the case of thermal initial state, it is always less than the value for the vacuum initial state such that considering multiple shocks it gets more smaller. Our results indicate that by increasing the temperature of the initial state, the corresponding rate of complexity growth starts far from final saturation rate value.

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