Pith Number

pith:BXCSDK2S

pith:2008:BXCSDK2S3CCQECYIIF4PW3CR2B

not attested not anchored not stored refs pending

Evolution of entanglement entropy following a quantum quench: Analytic results for the XY chain in a transverse magnetic field

Maurizio Fagotti, Pasquale Calabrese

arxiv:0804.3559 v1 · 2008-04-22 · cond-mat.stat-mech · cond-mat.str-el · 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{BXCSDK2S3CCQECYIIF4PW3CR2B}

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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.

Cited by

1 paper in Pith

Entanglement of Inhomogeneous Free Bosons and Orthogonal Polynomials

Receipt and verification

First computed	2026-07-04T17:10:28.213014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0dc521ab52d885020b084178fb6c51d047ebb643e47f7e49eb733bab84973031

Aliases

arxiv: 0804.3559 · arxiv_version: 0804.3559v1 · doi: 10.48550/arxiv.0804.3559 · pith_short_12: BXCSDK2S3CCQ · pith_short_16: BXCSDK2S3CCQECYI · pith_short_8: BXCSDK2S

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/BXCSDK2S3CCQECYIIF4PW3CR2B \
  | 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: 0dc521ab52d885020b084178fb6c51d047ebb643e47f7e49eb733bab84973031

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07e3880cc03f012beada9e261e1d9fad5b678d894248061d177e43000a4e329e",
    "cross_cats_sorted": [
      "cond-mat.str-el",
      "hep-th",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2008-04-22T16:21:30Z",
    "title_canon_sha256": "2f9e8e38b5fc947de011fe23aba9e466eb2ed3880c9fa055f324b9bccbe2368b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.3559",
    "kind": "arxiv",
    "version": 1
  }
}