Pith Number

pith:UVNF63FP

pith:2009:UVNF63FPSDTKE2Y2FI42IIYVJB

not attested not anchored not stored refs pending

Entanglement entropy in free quantum field theory

H.Casini, M.Huerta

arxiv:0905.2562 v3 · 2009-05-15 · 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{UVNF63FPSDTKE2Y2FI42IIYVJB}

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.

Cited by

18 papers in Pith

Multi-entropy in heavy local quenches

Velocity dependence of holographic entanglement entropy in a charged plasma

Schwinger-Keldysh Path Integral for Gauge theories

Lectures on entanglement entropy in field theory and holography

Irreversibility of quantum field theory in de Sitter: the C, F and A theorems

Receipt and verification

First computed	2026-07-04T17:17:11.445879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a55a5f6caf90e6a26b1a2a39a4231548702083e7799e3ef3fc39e0ed319b6f32

Aliases

arxiv: 0905.2562 · arxiv_version: 0905.2562v3 · doi: 10.48550/arxiv.0905.2562 · pith_short_12: UVNF63FPSDTK · pith_short_16: UVNF63FPSDTKE2Y2 · pith_short_8: UVNF63FP

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/UVNF63FPSDTKE2Y2FI42IIYVJB \
  | 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: a55a5f6caf90e6a26b1a2a39a4231548702083e7799e3ef3fc39e0ed319b6f32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "199f9156f26553882cd77bcfffae91e49334d962c2ff5b3491d3e85540a72e1a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-05-15T15:27:48Z",
    "title_canon_sha256": "54c1137d58af869c16ab822c96ce4af8e09b1060b9ffaeb78e069e984d1e5c17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2562",
    "kind": "arxiv",
    "version": 3
  }
}