Pith Number

pith:LIUK7PFY

pith:2026:LIUK7PFYNFAVR6U5RQV5AM5L2M

not attested not anchored not stored refs pending

Analytical Nuclear Gradients and Hessians on Quantum Hardware via Orbital-Optimized VQE with Error Mitigation

Erik Kjellgren, Jacob Kongsted, Karl Michael Ziems, Renato Olarte Hernandez, Sonia Coriani, Stephan P. A. Sauer

arxiv:2608.08758 v1 · 2026-08-09 · physics.chem-ph · 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{LIUK7PFYNFAVR6U5RQV5AM5L2M}

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	2026-08-11T01:25:15.267246Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a28afbcb8694158fa9d8c2bd033abd32f3b536c6c03d8c96d954db3c39fbd1e

Aliases

arxiv: 2608.08758 · arxiv_version: 2608.08758v1 · doi: 10.48550/arxiv.2608.08758 · pith_short_12: LIUK7PFYNFAV · pith_short_16: LIUK7PFYNFAVR6U5 · pith_short_8: LIUK7PFY

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/LIUK7PFYNFAVR6U5RQV5AM5L2M \
  | 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: 5a28afbcb8694158fa9d8c2bd033abd32f3b536c6c03d8c96d954db3c39fbd1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a8920b5f7f14471eb5281ef795aea82c6d3f036226851bb90471d25ee6fddfe",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2026-08-09T15:18:23Z",
    "title_canon_sha256": "024d0debc2e1295cbde87500a9a3a093010456db443af27b7f006f66c778a811"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.08758",
    "kind": "arxiv",
    "version": 1
  }
}