{
  "annotation_id": "ff9fe945-d336-4487-a32d-7c14e12a042b",
  "date_created": "2026-03-02T18:02:36.799000Z",
  "date_modified": "2026-03-02T18:02:36.799000Z",
  "file_hash": "f42031bed76db27f559a3fc06784c0064d0483e00dd38c0ec14113941fe85a1c",
  "private": false,
  "record": {
    "abstract": "We study and compare the information loss of a large class of Gaussian\nbipartite systems. It includes the usual Caldeira-Leggett type model as well as\nAnosov models (parametric oscillators, the inverted oscillator environment,\netc), which exhibit instability, one of the most important characteristics of\nchaotic systems. We establish a rigorous connection between the quantum\nLyapunov exponents and coherence loss, and show that in the case of unstable\nenvironments coherence loss is completely determined by the upper quantum\nLyapunov exponent, a behavior which is more universal than that of the\nCaldeira-Leggett type model.",
    "arxiv_id": "quant-ph/0703200",
    "authors": [
      "K. M. Fonseca Romero",
      "J. E. Parreira",
      "L. A. M. Souza",
      "M. C. Nemes",
      "W. F. Wreszinski"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1751-8113/41/11/115303",
    "journal_ref": "J. Phys. A: Math. Theor. 41 115303 (9pp) (2008)",
    "title": "An analytical relation between entropy production and quantum Lyapunov   exponents for Gaussian bipartite systems",
    "url": "https://arxiv.org/abs/quant-ph/0703200"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "81aa03aa-a8b9-4593-aaae-dac319aca272",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}