Pith Number

pith:NPOPUI2J

pith:2026:NPOPUI2JFFYNLVZPWFK6EQJDUY

not attested not anchored not stored refs pending

Ultraviolet structure of entanglement harvesting from energy density and other quadratic couplings

Boris Ragula, Eduardo Mart\'in-Mart\'inez, Matheus H. Zambianco

arxiv:2607.13131 v1 · 2026-07-14 · quant-ph · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPOPUI2JFFYNLVZPWFK6EQJDUY}

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	2026-07-16T00:21:59.056834Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bdcfa23492970d5d72fb155e24123a6362d870ba6948fbc52eb7ea4521b732f

Aliases

arxiv: 2607.13131 · arxiv_version: 2607.13131v1 · doi: 10.48550/arxiv.2607.13131 · pith_short_12: NPOPUI2JFFYN · pith_short_16: NPOPUI2JFFYNLVZP · pith_short_8: NPOPUI2J

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/NPOPUI2JFFYNLVZPWFK6EQJDUY \
  | 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: 6bdcfa23492970d5d72fb155e24123a6362d870ba6948fbc52eb7ea4521b732f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f21ed12e91b2ddefab8e0d10264766fcd7142eaebd2bccd5472303b6ca0404b4",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-07-14T18:00:00Z",
    "title_canon_sha256": "9f867d8114156be6681a1250d0ac73a00d50da46d9e2bf6b7fb8d997657ced2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.13131",
    "kind": "arxiv",
    "version": 1
  }
}