Pith Number

pith:WE4DHMD5

pith:2004:WE4DHMD5RFMYFZ7AP24BAO64Z6

not attested not anchored not stored refs pending

Quantum Phase Transition of Ground-state Entanglement in a Heisenberg Spin Chain Simulated in an NMR Quantum Computer

Dieter Suter, Jiangfeng Du, Xinhua Peng

arxiv:quant-ph/0411049 v1 · 2004-11-08 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WE4DHMD5RFMYFZ7AP24BAO64Z6}

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	2026-07-04T16:51:05.460469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b13833b07d895982e7e07eb8103bdccfa373361e5d5f7fd25ad37262f5283026

Aliases

arxiv: quant-ph/0411049 · arxiv_version: quant-ph/0411049v1 · doi: 10.48550/arxiv.quant-ph/0411049 · pith_short_12: WE4DHMD5RFMY · pith_short_16: WE4DHMD5RFMYFZ7A · pith_short_8: WE4DHMD5

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/WE4DHMD5RFMYFZ7AP24BAO64Z6 \
  | 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: b13833b07d895982e7e07eb8103bdccfa373361e5d5f7fd25ad37262f5283026

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76e043905d6ff1d576cfbcc42df69c16335781e26ce4a6762ef460e127dd1cd6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2004-11-08T09:58:07Z",
    "title_canon_sha256": "71cf31ba553c429668b776ce2d12aee00c556ef9f979358ef389d1faa8dae0e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0411049",
    "kind": "arxiv",
    "version": 1
  }
}