Pith Number

pith:ZAKXJGXV

pith:2009:ZAKXJGXVD25IMEYACZJOBYRLT5

not attested not anchored not stored refs pending

Quantum fields on curved spacetimes and a new look at the Unruh effect

Richard Schaeffer, Ugo Moschella

arxiv:0904.3751 v1 · 2009-04-23 · 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{ZAKXJGXVD25IMEYACZJOBYRLT5}

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.

Receipt and verification

First computed	2026-05-18T04:23:23.384982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c815749af51eba8613001652e0e22b9f6d9165ec01131b9e3044c54fb3a57806

Aliases

arxiv: 0904.3751 · arxiv_version: 0904.3751v1 · doi: 10.48550/arxiv.0904.3751 · pith_short_12: ZAKXJGXVD25I · pith_short_16: ZAKXJGXVD25IMEYA · pith_short_8: ZAKXJGXV

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/ZAKXJGXVD25IMEYACZJOBYRLT5 \
  | 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: c815749af51eba8613001652e0e22b9f6d9165ec01131b9e3044c54fb3a57806

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d55fbef5e76a7e3f7a0df07faeaf14a6eaf67203906f05b8f9b5fc2c3314bcc1",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-04-23T20:06:35Z",
    "title_canon_sha256": "7da2efadb1c0cf0c9cb82c388acfea0613b373ead2a9a0dc21e24c1150cdf7a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3751",
    "kind": "arxiv",
    "version": 1
  }
}