Pith Number

pith:J7ORGA7Q

pith:2015:J7ORGA7QEUKFEKGWBMP72JRV7J

not attested not anchored not stored refs pending

Entanglement entropy between real and virtual particles in $\phi ^{4}$ quantum field theory

Juan Sebastian Ardenghi

arxiv:1504.01315 v1 · 2015-04-06 · quant-ph · 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{J7ORGA7QEUKFEKGWBMP72JRV7J}

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

1 paper in Pith

Entanglement (1+2) QED in a double layer of Dirac Materials

Receipt and verification

First computed	2026-05-18T02:19:34.658029Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fdd1303f025145228d60b1ffd2635fa58a7706c89374ab396290ac9383b5366

Aliases

arxiv: 1504.01315 · arxiv_version: 1504.01315v1 · doi: 10.48550/arxiv.1504.01315 · pith_short_12: J7ORGA7QEUKF · pith_short_16: J7ORGA7QEUKFEKGW · pith_short_8: J7ORGA7Q

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/J7ORGA7QEUKFEKGWBMP72JRV7J \
  | 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: 4fdd1303f025145228d60b1ffd2635fa58a7706c89374ab396290ac9383b5366

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d01acc4f3b6e8919a8ea5b92b424ef54c238476885747bccf44d494d5aba1ac",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-04-06T16:25:22Z",
    "title_canon_sha256": "046ea5ee2770455f0c1374871a34dad5aa2ad73ba4702f82e4cbf88a0b495caf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01315",
    "kind": "arxiv",
    "version": 1
  }
}