{
  "annotation_id": "5fae914d-c5cc-4ab1-9f24-d90241ee097a",
  "date_created": "2026-03-02T18:02:07.090000Z",
  "date_modified": "2026-03-02T18:02:07.090000Z",
  "file_hash": "571f6d8271c3c1010b3444a991259e297ac198c7379530b1434cb35b2c767b80",
  "private": false,
  "record": {
    "abstract": "We study the short-time and medium-time behavior of the survival probability\nof decaying states in the framework of the $N$-level Friedrichs model. The\ndegenerated and nearly degenerated systems are discussed in detail. We show\nthat in these systems decay can be considerably slowed down or even stopped by\nappropriate choice of initial conditions. We analyze the behaviour of the\nmultilevel system within the so-called Zeno era. We examine and compare two\ndifferent definitions of the Zeno time. We demonstrate that the Zeno era can be\nconsiderably enlarged by proper choice of the system parameters.",
    "arxiv_id": "quant-ph/0402210",
    "authors": [
      "I. Antoniou",
      "E. Karpov",
      "G. Pronko",
      "E. Yarevsky"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Zeno era and non-decaying subspaces for multilevel Friedrichs model",
    "url": "https://arxiv.org/abs/quant-ph/0402210"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "43e8f9a5-b102-4036-80b8-baeeafb69919",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}