Unresolvable Identifier

arXiv:2605.05663 · detector doi_compliance · cross_source · 2026-05-19 13:21:24.159031+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1088/1126-6708/2005/02/050/meta' 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

R. G. Cai and S. P. Kim, “First law of thermodynamics and F riedmann equations of Friedmann–Robertson–Walker universe,” J. High Energy Phys. 2005(02), 050 (2005). https://iopscience.iop.org/article/10.1088/1126-6708/2005/02/050/meta

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1088/1126-6708/2005/02/050/meta",
  "raw_excerpt": "R. G. Cai and S. P. Kim, \u201cFirst law of thermodynamics and F riedmann equations of Friedmann\u2013Robertson\u2013Walker universe,\u201d J. High Energy Phys. 2005(02), 050 (2005). https://iopscience.iop.org/article/10.1088/1126-6708/2005/02/050/meta",
  "ref_index": 84,
  "verdict_class": "cross_source"
}