{
  "annotation_id": "8a2a9bb3-4766-4df8-9d12-ceadc6f3dbde",
  "date_created": "2026-03-02T18:01:53.119000Z",
  "date_modified": "2026-03-02T18:01:53.119000Z",
  "file_hash": "b388985ad8c3a6ac1d2fd72c192d70e9d85a8a34970f0dc163e8cff61248466e",
  "private": false,
  "record": {
    "abstract": "We study the time evolution of the entangled kaon system by considering the\nLiouville - von Neumann equation with an additional term which allows for\ndecoherence. We choose as generators of decoherence the projectors to the\n2-particle eigenstates of the Hamiltonian. Then we compare this model with the\ndata of the CPLEAR experiment and find in this way an upper bound on the\nstrength $\\lambda$ of the decoherence. We also relate $\\lambda$ to an effective\ndecoherence parameter $\\zeta$ considered previously in literature. Finally we\ndiscuss our model in the light of different measures of entanglement, i.e. the\nvon Neumann entropy $S$, the entanglement of formation $E$ and the concurrence\n$C$, and we relate the decoherence parameter $\\zeta$ to the loss of\nentanglement: $1 - E$.",
    "arxiv_id": "quant-ph/0209017",
    "authors": [
      "Reinhold A. Bertlmann",
      "Katharina Durstberger",
      "Beatrix C. Hiesmayr"
    ],
    "categories": [
      "quant-ph",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevA.68.012111",
    "journal_ref": "Phys.Rev. A68 (2003) 012111",
    "title": "Decoherence of entangled kaons and its connection to entanglement   measures",
    "url": "https://arxiv.org/abs/quant-ph/0209017"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cf67b863-a395-4836-bbca-6a676d3ba194",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}