{
  "abstract": "We present a coarse classification scheme for the boundary data of massive QFTs based on transitions of boundary states via soliton / kink profiles. Starting from the lattice of boundary states, we introduce the boundary screening group $\\mathbb{B}$: the equivalence classes of boundary states which cannot be connected by such transitions. In string theory backgrounds which geometrically engineer an interacting QFT in the target space, $\\mathbb{B}$ computes the worldsheet analog of the target space defect group $\\mathbb{D}$. When $\\mathbb{B}$ is non-zero, it provides a diagnostic for having a target space with non-normalizable modes. For interfaces between QFTs, similar considerations imply the existence of a non-trivial conserved charge associated with soliton absorption / transmission, which means that the interface cannot fully dissolve / disappear. Similar considerations hold for junctions of QFTs, which in the special case of string worldsheet CFTs translate to junctions of string theories. We illustrate these general considerations with a number of non-geometric 2D $\\mathcal{N} = (2,2)$ Landau-Ginzburg models, as well as their natural lifts to 4D $\\mathcal{N} = 1$ Wess-Zumino models.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.40777",
  "author_total": 3,
  "authors": [
    {
      "name": "Vivek Chakrabhavi"
    },
    {
      "name": "Babak Haghighat"
    },
    {
      "name": "Jonathan J. Heckman"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1n3jn5tz6sbbs.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.40777",
  "fulltext_url": null,
  "id": "1n3jn5tz6sbbs",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.40777",
  "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",
      "hep-th"
    ],
    [
      "arxiv",
      "math.AG"
    ],
    [
      "arxiv",
      "math.RT"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.40777",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1n3jn5tz6sbbs.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:21:15Z",
      "native_id": "2610.40777",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.40777"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.AG",
      "subfield": "algebra-number-theory"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "On Boundary State Screening via Solitons",
  "title_text": "On Boundary State Screening via Solitons",
  "type": "preprint",
  "updated_at": "2026-11-04T15:20:52Z",
  "url": "https://research.draconitic.com/paper/1n3jn5tz6sbbs",
  "venue": "arXiv",
  "versions": []
}