Pith Number

pith:AMQPCK44

pith:2026:AMQPCK44P74HGUTEA5WSH5BDFX

not attested not anchored not stored refs pending

Efficient Three-Dimensional Sub-Doppler Cooling of $^{40}$Ca$^+$ in a Penning Trap

Brian C. Sawyer, Brian J. McMahon

arxiv:2602.02937 v1 · 2026-02-03 · physics.atom-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{AMQPCK44P74HGUTEA5WSH5BDFX}

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

Dual-Platform Precision Measurement of the $3^2D_{5/2}$ to $4^2S_{1/2}$ $g$-Factor Ratio in $^{40}\text{Ca}^+$

Receipt and verification

First computed	2026-07-22T00:22:16.077769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0320f12b9c7ff8735264076d23f4232dedcd31a4fbb54a7ea239deccdcfbd256

Aliases

arxiv: 2602.02937 · arxiv_version: 2602.02937v1 · doi: 10.48550/arxiv.2602.02937 · pith_short_12: AMQPCK44P74H · pith_short_16: AMQPCK44P74HGUTE · pith_short_8: AMQPCK44

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/AMQPCK44P74HGUTEA5WSH5BDFX \
  | 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: 0320f12b9c7ff8735264076d23f4232dedcd31a4fbb54a7ea239deccdcfbd256

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90b220deedab3678d2902b6d1e7c3fd5f2b32bd60d2e694e1cdc60965ecfcdf1",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2026-02-03T00:14:50Z",
    "title_canon_sha256": "fe936ce28ea3d0dc677865b700125bdba1e90ec7dc961ef7257e0da94d5bfbdb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.02937",
    "kind": "arxiv",
    "version": 1
  }
}