A Memory of Majorana Fermions through Quantum Quench
  We study the sudden quench of a one-dimensional p-wave superconductor through its topological signature in the entanglement spectrum. The long-time evolution of the system and its topological characterization depend on a pseudomagnetic field ${\bs R}_{\mbox{\text eff}}(k)$, which connects both the initial and the final Hamiltonians, hence exhibiting a memory effect. In particular, we explore the robustness of the Majorana zero-mode associated with the entanglement cut in the topologically nontrivial phase and identify the parameter space in which the mode can survive in the infinite-time limit. 
Ming-Chiang Chung, Yi-Hao Jhu, Pochung Chen, Chung-Yu Mou and Xin Wan
cond-mat.mes-hall cond-mat.str-el