Pith Number

pith:4QG5JJDQ

pith:2011:4QG5JJDQ6G2UQ2MDWMYTGVENQU

not attested not anchored not stored refs pending

Variance squeezing and entanglement of the XX central spin model

Faisal A. A. El-Orany, M Sebawe Abdalla

arxiv:1106.3394 v1 · 2011-06-17 · 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{4QG5JJDQ6G2UQ2MDWMYTGVENQU}

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	2026-05-18T02:01:35.874879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e40dd4a470f1b5486983b33133548d851530957e0c9079c31347f64483abf525

Aliases

arxiv: 1106.3394 · arxiv_version: 1106.3394v1 · doi: 10.48550/arxiv.1106.3394 · pith_short_12: 4QG5JJDQ6G2U · pith_short_16: 4QG5JJDQ6G2UQ2MD · pith_short_8: 4QG5JJDQ

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/4QG5JJDQ6G2UQ2MDWMYTGVENQU \
  | 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: e40dd4a470f1b5486983b33133548d851530957e0c9079c31347f64483abf525

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94d1b185386aa21d56fbc7e483ae0527af132a89ca5675a5bfc2af96a3c1f1a4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-06-17T06:46:26Z",
    "title_canon_sha256": "a49ac370e0b4df550df6b9dc28df3d7061a31192378c84fc72f59b05c6f6f857"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.3394",
    "kind": "arxiv",
    "version": 1
  }
}