Unresolvable Identifier

arXiv:2604.20419 · detector doi_compliance · cross_source · 2026-05-20 01:58:45.183163+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1088/1751-8121/abdbef' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.

Paper page Integrity report arXiv Try DOI

Evidence text

Excited-state quantum phase transitions , author =. Journal of Physics A: Mathematical and Theoretical , volume =. 2021 , month =. doi:10.1088/1751-8121/abdbef , url =

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1088/1751-8121/abdbef",
  "raw_excerpt": "Excited-state quantum phase transitions , author =. Journal of Physics A: Mathematical and Theoretical , volume =. 2021 , month =. doi:10.1088/1751-8121/abdbef , url =",
  "ref_index": 65,
  "verdict_class": "cross_source"
}