Pith Number

pith:3CTTEJH5

pith:2007:3CTTEJH55E63DNROVFDSZ3PCSN

not attested not anchored not stored refs pending

The Refractive Index of Curved Spacetime: the Fate of Causality in QED

Graham M. Shore, Timothy J. Hollowood

arxiv:0707.2303 v2 · 2007-07-16 · hep-th · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3CTTEJH55E63DNROVFDSZ3PCSN}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Microcausality without Lorentz invariance

Receipt and verification

First computed	2026-07-04T15:24:27.833324Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8a73224fde93db1b62ea9472cede2937d3b73710289391e7753f040eb86bbe6

Aliases

arxiv: 0707.2303 · arxiv_version: 0707.2303v2 · doi: 10.48550/arxiv.0707.2303 · pith_short_12: 3CTTEJH55E63 · pith_short_16: 3CTTEJH55E63DNRO · pith_short_8: 3CTTEJH5

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/3CTTEJH55E63DNROVFDSZ3PCSN \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: d8a73224fde93db1b62ea9472cede2937d3b73710289391e7753f040eb86bbe6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4b48101fa73d325dfc0d6dafb2fcb8e41c04efa916e8c84d0887da890f3df21",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2007-07-16T11:31:48Z",
    "title_canon_sha256": "7a59854812779d1a26844456712fe0c2e088d75c49c4955ff186b9a1637f6a53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.2303",
    "kind": "arxiv",
    "version": 2
  }
}