Pith Number

pith:XO4WARGY

pith:2009:XO4WARGY6CB7A6MYYT45RGUQE5

not attested not anchored not stored refs pending

Entanglement Entropy in the O(N) model

Carlos A. Fuertes, Max A. Metlitski, Subir Sachdev

arxiv:0904.4477 v1 · 2009-04-28 · cond-mat.stat-mech · hep-th · 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{XO4WARGY6CB7A6MYYT45RGUQE5}

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	2026-07-04T15:57:09.900079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbb96044d8f083f07998c4f9d89a90274bbfa335e2d45d0aedbbc6d2804b112c

Aliases

arxiv: 0904.4477 · arxiv_version: 0904.4477v1 · doi: 10.48550/arxiv.0904.4477 · pith_short_12: XO4WARGY6CB7 · pith_short_16: XO4WARGY6CB7A6MY · pith_short_8: XO4WARGY

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/XO4WARGY6CB7A6MYYT45RGUQE5 \
  | 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: bbb96044d8f083f07998c4f9d89a90274bbfa335e2d45d0aedbbc6d2804b112c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3debd1d50850917dfc795cbc4775072643581cbce56a7be54a192000f42414f3",
    "cross_cats_sorted": [
      "hep-th",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2009-04-28T20:47:56Z",
    "title_canon_sha256": "09c4af94d431b75d01dbc0369ad38e5e95c6db913a22fbd99cfb4b0b5a569826"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4477",
    "kind": "arxiv",
    "version": 1
  }
}