Pith Number

pith:4R7FMPQZ

pith:2021:4R7FMPQZMQY2J4R2QUU5OIP5U6

not attested not anchored not stored refs pending

Coherent feedback cooling of a nanomechanical membrane with atomic spins

Chun Tat Ngai, Gian-Luca Schmid, Manel Bosch Aguilera, Maryse Ernzer, Philipp Treutlein, Thomas M. Karg

arxiv:2111.09802 v2 · 2021-11-18 · quant-ph · physics.atom-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4R7FMPQZMQY2J4R2QUU5OIP5U6}

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	2026-07-05T04:03:38.223605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e47e563e196431a4f23a8529d721fda7b6ddda0295fb378ce43af509e6baec66

Aliases

arxiv: 2111.09802 · arxiv_version: 2111.09802v2 · doi: 10.48550/arxiv.2111.09802 · pith_short_12: 4R7FMPQZMQY2 · pith_short_16: 4R7FMPQZMQY2J4R2 · pith_short_8: 4R7FMPQZ

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/4R7FMPQZMQY2J4R2QUU5OIP5U6 \
  | 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: e47e563e196431a4f23a8529d721fda7b6ddda0295fb378ce43af509e6baec66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3db46ee4af680dfa3b8c46100cb0928be261b68e925ed59331724cd0e7a3ff82",
    "cross_cats_sorted": [
      "physics.atom-ph",
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-11-18T17:11:24Z",
    "title_canon_sha256": "937dd9027c3bdf51732b3dd84047dbd7f6b07de6d91b45a9bf170ff37b428e93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.09802",
    "kind": "arxiv",
    "version": 2
  }
}