Pith Number

pith:FO7BRVFM

pith:2001:FO7BRVFMK3HISXCXSP2DZLYDKK

not attested not anchored not stored refs pending

Improving the Efficiency of an Ideal Heat Engine: The Quantum Afterburner

Marlan O. Scully

arxiv:quant-ph/0105135 v1 · 2001-05-25 · 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{FO7BRVFMK3HISXCXSP2DZLYDKK}

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	2026-05-18T01:05:04.979542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bbe18d4ac56ce895c5793f43caf035283e93af7be46589ce48d427cb6c10a21

Aliases

arxiv: quant-ph/0105135 · arxiv_version: quant-ph/0105135v1 · doi: 10.48550/arxiv.quant-ph/0105135 · pith_short_12: FO7BRVFMK3HI · pith_short_16: FO7BRVFMK3HISXCX · pith_short_8: FO7BRVFM

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/FO7BRVFMK3HISXCXSP2DZLYDKK \
  | 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: 2bbe18d4ac56ce895c5793f43caf035283e93af7be46589ce48d427cb6c10a21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fc142aae307c59c6c3879c72994e94ace5270dfa913b086b0895f1b7cbc3b93",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2001-05-25T22:47:33Z",
    "title_canon_sha256": "f2808c2f582808617b1b349166e195bd721e2402e3a26b3b6595da88d84c47ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0105135",
    "kind": "arxiv",
    "version": 1
  }
}