Pith Number

pith:4F5KLHXU

pith:2001:4F5KLHXU5EHB5HSNI7TTJSN4ZB

not attested not anchored not stored refs pending

Fermion production from preheating-amplified metric perturbations

Bruce A. Bassett (Portsmouth), Lorenzo Sorbo (Trieste), Marco Peloso (Bonn), Shinji Tsujikawa (Tokyo)

arxiv:hep-ph/0109176 v2 · 2001-09-20 · hep-ph · astro-ph · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4F5KLHXU5EHB5HSNI7TTJSN4ZB}

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	2026-05-18T04:17:45.403826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e17aa59ef4e90e1e9e4d47e734c9bcc87d26a1343231514ec21eb7e76bce099e

Aliases

arxiv: hep-ph/0109176 · arxiv_version: hep-ph/0109176v2 · doi: 10.48550/arxiv.hep-ph/0109176 · pith_short_12: 4F5KLHXU5EHB · pith_short_16: 4F5KLHXU5EHB5HSN · pith_short_8: 4F5KLHXU

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/4F5KLHXU5EHB5HSNI7TTJSN4ZB \
  | 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: e17aa59ef4e90e1e9e4d47e734c9bcc87d26a1343231514ec21eb7e76bce099e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "087cf90540e86b458c754d7ad6b577c512b64888de1e4357b8d83c91ec32a2aa",
    "cross_cats_sorted": [
      "astro-ph",
      "gr-qc",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "hep-ph",
    "submitted_at": "2001-09-20T04:41:54Z",
    "title_canon_sha256": "96dfb33bf2658fc522402cee0c9d6737091689db83e731b2621809358512c1cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-ph/0109176",
    "kind": "arxiv",
    "version": 2
  }
}