{
  "abstract": "A bstract : We study wavepackets of exotic excitations after two-dimensional fermions are scattered by the boundary condition constructed by Maldacena and Ludwig, which turns elementary excitations into exotic fractionally-charged objects. They are of interest in the s-wave approximation of the fermion-monopole scattering in four-dimensional QED and of the multi-channel Kondo effect. Our main result is an explicit expression for the outgoing state of a pair of such particles. We show analytically and numerically that the expectation value 〈 N 〉 of the total number of fermions and anti-fermions diverges when the wavepacket is localized to a point. The energy and charge densities remain localized, and the charge integrated locally around each wavepacket is finite and fractional, as expected from the known action of the boundary condition.",
  "abstract_shown": true,
  "affiliations": [
    "The University of Tokyo"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Yuji Tachikawa",
      "orcid": "0000-0002-4547-2146"
    },
    {
      "affs": [
        0
      ],
      "name": "Keita Tsuji",
      "orcid": "0009-0003-3537-802X"
    },
    {
      "affs": [
        0
      ],
      "name": "Masataka Watanabe",
      "orcid": "0000-0001-8841-3915"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7spfvwkx1k6qf.bib",
  "cited_by": 0,
  "doi": "10.1007/jhep10(2026)140",
  "fulltext_url": null,
  "id": "7spfvwkx1k6qf",
  "issns": [
    "1029-8479"
  ],
  "landing_url": "https://link.springer.com/10.1007/JHEP10(2026)140",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3106|Black Holes and Theoretical Physics"
    ]
  ],
  "openalex": "W7140993886",
  "pdf_url": "https://link.springer.com/content/pdf/10.1007/JHEP10(2026)140.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/7spfvwkx1k6qf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "10.1007/jhep10(2026)140",
      "source": "crossref",
      "url": "https://link.springer.com/10.1007/JHEP10(2026)140"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3106|Black Holes and Theoretical Physics",
      "subfield": "high-energy"
    }
  ],
  "title": "What happens to wavepackets of fermions when scattered by the Maldacena-Ludwig wall?",
  "title_text": "What happens to wavepackets of fermions when scattered by the Maldacena-Ludwig wall?",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:01Z",
  "url": "https://research.draconitic.com/paper/7spfvwkx1k6qf",
  "venue": "Journal of High Energy Physics",
  "versions": []
}