{
  "annotation_id": "d98577ae-0915-43b9-aecd-ae00c190f688",
  "date_created": "2026-02-17T05:53:11.888000Z",
  "date_modified": "2026-02-17T05:53:11.888000Z",
  "file_hash": "ec7c418d6e615fda106401dc52eb422f07cee8e88b548c27c39fd0ef64a9f1f4",
  "private": false,
  "record": {
    "abstract": "We investigate the magnetic orders and excitations in a half-filled Hubbard model that continuously interpolates between the Lieb and kagome lattices. Using self-consistent Hartree-Fock approximation combined with real-time two-particle response functions from the Bethe-Salpeter equation in the random phase approximation, we map the $U-t\u0027$ phase diagram of the Lieb-kagome lattices, identifying the typical magnetic states and the corresponding magnetic excitation spectra. In addition to gapless Goldstone magnons, the ferrimagnetic and antiferromagnetic symmetry-broken phases also exhibit gapped Higgs magnon bands, which originate from amplitude fluctuations in the order parameter characterizing spontaneous symmetry breaking.",
    "arxiv_id": "2601.07562",
    "authors": [
      "Teng-Fei Ying",
      "Hugo U. R. Strand",
      "Benjamin T. Zhou",
      "Erik G. C. P. van Loon"
    ],
    "categories": [
      "cond-mat.str-el"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Magnons in multiorbital Hubbard models, from Lieb to kagome",
    "url": "https://arxiv.org/abs/2601.07562",
    "version": "v2"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "402c2d3e-9202-4fad-91b4-b32efe490e3d",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}