Dynamics of almost strong edge modes in spin chains away from integrability

  title={Dynamics of almost strong edge modes in spin chains away from integrability},
  author={Daniel J. Yates and Alexander G. Abanov and Aditi Mitra},
  journal={arXiv: Mesoscale and Nanoscale Physics},
Results are presented for the dynamics of an almost strong edge mode which is the quasi-stable Majorana edge mode occurring in non-integrable spin chains. The dynamics of the edge mode is studied using exact diagonalization, and compared with time-evolution with respect to an effective semi-infinite model in Krylov space obtained from the recursion method. The effective Krylov Hamiltonian is found to resemble a spatially inhomogeneous SSH model where the hopping amplitude increases linearly… 

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