{
  "abstract": "We study nonlinear DC electric transport of quantum-metric origin by combining adiabatic perturbation theory with the nonequilibrium Green function approach. The adiabatic ansatz provides a basis for directly treating a DC electric field in the velocity gauge, rather than introducing it as the zero-frequency limit of an AC field. The resulting adiabatic-basis Hamiltonian takes the same form as in the length gauge, enabling a systematic comparison across different formulations. Applying this fully quantum formulation, we find a longitudinal nonreciprocal current governed by the quantum-metric dipole. The essential ingredient is a quantum correction to the distribution function that is absent in semiclassical treatments. We trace this correction to the finite spread of an electron wave packet during relaxation under a bias field, thereby identifying shifted quasiequilibrium as the physical origin of quantum-metric nonreciprocal transport.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2607.02100",
  "author_total": 3,
  "authors": [
    {
      "name": "Sota Kitamura"
    },
    {
      "name": "Takahiro Anan"
    },
    {
      "name": "Takahiro Morimoto"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/54me90j3hshhm.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2607.02100",
  "fulltext_url": null,
  "id": "54me90j3hshhm",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2607.02100",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mes-hall"
    ],
    [
      "openalex",
      "3107|Quantum and electron transport phenomena"
    ]
  ],
  "openalex": "W7167254446",
  "pdf_url": "https://arxiv.org/pdf/2607.02100",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-25",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/54me90j3hshhm.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2607.02100",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2607.02100"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Quantum-geometric shift of quasiequilibrium: Origin of nonreciprocal current driven by quantum-metric dipole",
  "title_text": "Quantum-geometric shift of quasiequilibrium: Origin of nonreciprocal current driven by quantum-metric dipole",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/54me90j3hshhm",
  "venue": "arXiv",
  "versions": []
}