Pith Number

pith:DDSEJ5EV

pith:2025:DDSEJ5EVUKJ3WD3RZDWEZDQK3O

not attested not anchored not stored refs pending

Quantum Fisher Information and the Curvature of Entanglement

Anil Shaji, Anjala M Babu, Da-Wei Luo, Quinn Langfitt, Stephen K. Gray, Ting Yu, Zain H. Saleem

arxiv:2504.13729 v4 · 2025-04-18 · 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{DDSEJ5EVUKJ3WD3RZDWEZDQK3O}

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

Modular Self-Duality, Symmetrized Relative Entropy, and Bogoliubov--Kubo--Mori Susceptibility in Quantum Field Theory

Receipt and verification

First computed	2026-06-08T01:03:44.119380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18e444f495a293bb0f71c8ec4c8e0adbac3b51b85695ecafb0b1c0791847ba27

Aliases

arxiv: 2504.13729 · arxiv_version: 2504.13729v4 · doi: 10.48550/arxiv.2504.13729 · pith_short_12: DDSEJ5EVUKJ3 · pith_short_16: DDSEJ5EVUKJ3WD3R · pith_short_8: DDSEJ5EV

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/DDSEJ5EVUKJ3WD3RZDWEZDQK3O \
  | 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: 18e444f495a293bb0f71c8ec4c8e0adbac3b51b85695ecafb0b1c0791847ba27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71cfa1c58054fcf43f9fc4e95ebe9e7be0bdf7508370b2867267a59303051b83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-04-18T14:55:42Z",
    "title_canon_sha256": "b8c8b66f8e2fdffd63916a1caf1318cdfc313580a918d91d1ca6c03c2c6e12f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.13729",
    "kind": "arxiv",
    "version": 4
  }
}