{
  "annotation_id": "bbee8380-903a-4548-9e6e-4e8e86dcda1e",
  "date_created": "2026-03-02T18:02:06.878000Z",
  "date_modified": "2026-03-02T18:02:06.878000Z",
  "file_hash": "9a97d93584a67cf9c04465f9f2bbc7635f906ac0fd2c0bff56a493a7d7c70ad3",
  "private": false,
  "record": {
    "abstract": "Quantum Brownian oscillator model (QBM), in the Fock-space representation,\ncan be viewed as a multi-level spin-boson model. At sufficiently low\ntemperature, the oscillator degrees of freedom are dynamically reduced to the\nlowest two levels and the system behaves effectively as a two-level (E2L)\nspin-boson model (SBM) in this limit. We discuss the physical mechanism of\nlevel reduction and analyze the behavior of E2L-SBM from the QBM solutions. The\navailability of close solutions for the QBM enables us to study the\nnon-Markovian features of decoherence and leakage in a SBM in the\nnon-perturbative regime (e.g. without invoking the Born approximation) in\nbetter details than before. Our result captures very well the characteristic\nnon-Markovian short time low temperature behavior common in many models.",
    "arxiv_id": "quant-ph/0405147",
    "authors": [
      "K. Shiokawa",
      "B. L. Hu"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.70.062106",
    "title": "Qubit Decoherence and Non-Markovian Dynamics at Low Temperatures via an   Effective Spin-Boson Model",
    "url": "https://arxiv.org/abs/quant-ph/0405147"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e74d1fac-d7cb-4d36-b6a5-fa0a812600c6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}