Quantum quench and scaling of entanglement entropy

• Caputa, Paweł

  Center for Gravitational Physics, Yukawa Institute for Theoretical Physics, Kyoto University

• Das, Sumit R.

  Department of Physics and Astronomy, University of Kentucky

• Nozaki, Masahiro

  Kadanoff Center for Theoretical Physics, University of Chicago

• Tomiya, Akio

  Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University

抄録

Global quantum quench with a finite quench rate which crosses critical points is known to lead to universal scaling of correlation functions as functions of the quench rate. In this work, we explore scaling properties of the entanglement entropy of a subsystem in a harmonic chain during a mass quench which asymptotes to finite constant values at early and late times and for which the dynamics is exactly solvable. When the initial state is the ground state, we find that for large enough subsystem sizes the entanglement entropy becomes independent of size. This is consistent with Kibble–Zurek scaling for slow quenches, and with recently discussed “fast quench scaling” for quenches fast compared to physical scales, but slow compared to UV cutoff scales.

収録刊行物

• Physics Letters B

  Physics Letters B 772 53-57, 2017-09-10

  Elsevier BV

詳細情報

• CRID: 1050845760779443456
• NII論文ID: 120006325123
• ISSN: 03702693
• HANDLE: 2433/226443
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles