{
  "abstract": "Spin-wave excitations provide a central probe of magnetic order and electronic correlations in strongly correlated materials. In this work, we develop an adiabatic theory of spin dynamics by combining the Niu-Kleinman formalism with Kotliar-Ruckenstein slave-boson theory (NK+KRSB). For each frozen spin configuration, the constrained slave-boson saddle point is solved self-consistently, allowing the Berry-curvature matrix and energy Hessian entering the linearized adiabatic equations of motion to be extracted directly. Applied to the half-filled single-orbital Hubbard model, the resulting spin-wave dispersion shows substantially improved agreement with determinant quantum Monte Carlo benchmarks compared with the random phase approximation and closely approaches results from the time-dependent Gutzwiller approximation. We further extend the method to a two-orbital model of $\\mathrm{La}_2\\mathrm{NiO}_4$, demonstrating its applicability to realistic multi-orbital correlated systems. Because the approach only requires saddle-point solutions near the magnetic ground state, it remains computationally efficient while incorporating strong-correlation effects beyond conventional weak-coupling descriptions, providing a practical framework for studying low-energy spin excitations in correlated quantum materials.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. B 114, 165144 (2026)",
  "arxiv": "2606.01984",
  "author_total": 5,
  "authors": [
    {
      "name": "Xuan Yang"
    },
    {
      "name": "Tianyang Xie"
    },
    {
      "name": "Shaohang Shi"
    },
    {
      "name": "Kun Jiang"
    },
    {
      "name": "Jiangping Hu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/91zthh1a8w60y.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.01984",
  "fulltext_url": null,
  "id": "91zthh1a8w60y",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.01984",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.str-el"
    ],
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7163182258",
  "pdf_url": "https://arxiv.org/pdf/2606.01984",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/91zthh1a8w60y.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:48Z",
      "native_id": "2606.01984",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.01984"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Spin Dynamics from Niu-Kleinman Adiabatic Approach and Slave Boson Mean Field Theory",
  "title_text": "Spin Dynamics from Niu-Kleinman Adiabatic Approach and Slave Boson Mean Field Theory",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:48Z",
  "url": "https://research.draconitic.com/paper/91zthh1a8w60y",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/3hcv-nckk",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}