Pith Number

pith:NBT3XOKZ

pith:2009:NBT3XOKZ3H4V6DVVYCOXH4QBNH

not attested not anchored not stored refs pending

A phonon laser in ultra-cold matter

G. Brodin, H. Ter\c{c}as, J.T. Mendon\c{c}a, M. Marklund

arxiv:0911.4916 v1 · 2009-11-25 · cond-mat.quant-gas

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NBT3XOKZ3H4V6DVVYCOXH4QBNH}

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	2026-05-18T03:25:33.672180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6867bbb959d9f95f0eb5c09d73f20169e9f5fbd609506c848482c8461a0978ea

Aliases

arxiv: 0911.4916 · arxiv_version: 0911.4916v1 · doi: 10.48550/arxiv.0911.4916 · pith_short_12: NBT3XOKZ3H4V · pith_short_16: NBT3XOKZ3H4V6DVV · pith_short_8: NBT3XOKZ

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/NBT3XOKZ3H4V6DVVYCOXH4QBNH \
  | 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: 6867bbb959d9f95f0eb5c09d73f20169e9f5fbd609506c848482c8461a0978ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45296e50b32adf90020caf448af1260c7a2af265e170b45e18eb677dc6e57dbe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.quant-gas",
    "submitted_at": "2009-11-25T17:02:11Z",
    "title_canon_sha256": "05a95c84d8f9f140d8e8b4e43c83d0c0f0658f2772f32608a2ae3436c9e4c205"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4916",
    "kind": "arxiv",
    "version": 1
  }
}