{
  "id": "1710.05289",
  "version": "v1",
  "published": "2017-10-15T06:53:47.000Z",
  "updated": "2017-10-15T06:53:47.000Z",
  "title": "Entanglement-Spectrum Crossing and Momentum-Time Skyrmions in Quench Dynamics",
  "authors": [
    "Zongping Gong",
    "Masahito Ueda"
  ],
  "comment": "6 pages, 4 figures",
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.quant-gas",
    "quant-ph"
  ],
  "abstract": "By studying the quench dynamics in one-dimensional superlattice systems with inversion symmetry, we find robust crossings in single-particle entanglement spectra for quantum quenches between different symmetry-protected topological phases. The physics behind this phenomenon is the emergence of a dynamical Chern number accompanied by unitarily created momentum-time Skyrmions. We also discuss a possible experimental situation based on Bloch-state tomography in ultracold atomic systems. Our work identifies the unique role of topology in quantum dynamics far from equilibrium.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-10-15T06:53:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quench dynamics",
      "entanglement-spectrum crossing",
      "single-particle entanglement spectra",
      "one-dimensional superlattice systems",
      "ultracold atomic systems"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}