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Thermalization after holographic bilocal quench

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  • Published: 25 September 2017
  • Volume 2017, article number 115, (2017)
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Thermalization after holographic bilocal quench
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  • Irina Ya. Aref’eva1,
  • Mikhail A. Khramtsov1 &
  • Maria D. Tikhanovskaya1 

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A preprint version of the article is available at arXiv.

Abstract

We study thermalization in the holographic (1 + 1)-dimensional CFT after simultaneous generation of two high-energy excitations in the antipodal points on the circle. The holographic picture of such quantum quench is the creation of BTZ black hole from a collision of two massless particles. We perform holographic computation of entanglement entropy and mutual information in the boundary theory and analyze their evolution with time. We show that equilibration of the entanglement in the regions which contained one of the initial excitations is generally similar to that in other holographic quench models, but with some important distinctions. We observe that entanglement propagates along a sharp effective light cone from the points of initial excitations on the boundary. The characteristics of entanglement propagation in the global quench models such as entanglement velocity and the light cone velocity also have a meaning in the bilocal quench scenario. We also observe the loss of memory about the initial state during the equilibration process. We find that the memory loss reflects on the time behavior of the entanglement similarly to the global quench case, and it is related to the universal linear growth of entanglement, which comes from the interior of the forming black hole. We also analyze general two-point correlation functions in the framework of the geodesic approximation, focusing on the study of the late time behavior.

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  1. Steklov Mathematical Institute, Russian Academy of Sciences, Gubkina str. 8, 119991, Moscow, Russia

    Irina Ya. Aref’eva, Mikhail A. Khramtsov & Maria D. Tikhanovskaya

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  1. Irina Ya. Aref’eva
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  2. Mikhail A. Khramtsov
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Correspondence to Mikhail A. Khramtsov.

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ArXiv ePrint: 1706.07390

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Aref’eva, I.Y., Khramtsov, M.A. & Tikhanovskaya, M.D. Thermalization after holographic bilocal quench. J. High Energ. Phys. 2017, 115 (2017). https://doi.org/10.1007/JHEP09(2017)115

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  • Received: 07 July 2017

  • Accepted: 03 September 2017

  • Published: 25 September 2017

  • DOI: https://doi.org/10.1007/JHEP09(2017)115

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Keywords

  • AdS-CFT Correspondence
  • Black Holes
  • Conformal Field Theory
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