Pith Number

pith:MZ2WWKE5

pith:2019:MZ2WWKE5FGOFMMID3YYUKVSRFK

not attested not anchored not stored refs pending

Part-per-billion measurement of the $4^2S_{1/2} \rightarrow 3^2D_{5/2}$ electric quadrupole transition isotope shifts between $^{42,44,48}$Ca$^+$ and $^{40}$Ca$^+$

Ashay N. Patel, Felix W. Knollmann, S. Charles Doret

arxiv:1906.04105 v4 · 2019-06-10 · physics.atom-ph

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MZ2WWKE5FGOFMMID3YYUKVSRFK}

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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

Towards a Global Search for New Physics with Isotope Shifts

Receipt and verification

First computed	2026-07-05T06:12:29.243739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66756b289d299c563103de314556512a938c2a40574e9a017e82f37aa7b9b3a4

Aliases

arxiv: 1906.04105 · arxiv_version: 1906.04105v4 · doi: 10.48550/arxiv.1906.04105 · pith_short_12: MZ2WWKE5FGOF · pith_short_16: MZ2WWKE5FGOFMMID · pith_short_8: MZ2WWKE5

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/MZ2WWKE5FGOFMMID3YYUKVSRFK \
  | 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: 66756b289d299c563103de314556512a938c2a40574e9a017e82f37aa7b9b3a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3a05049e5e61246c74736ea681e10872e57dba932e0a196c523a30b0b45fe39",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2019-06-10T16:26:14Z",
    "title_canon_sha256": "e76000fa81a8851b4e2c78acfc448fe82fd1ff72eeb777508a902e0dff4047d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.04105",
    "kind": "arxiv",
    "version": 4
  }
}