Pith Number

pith:ZA4MSRJU

pith:2018:ZA4MSRJUJNGIF5KUL6H6G44CKN

not attested not anchored not stored refs pending

Variational principle for quantum impurity systems in and out of equilibrium: application to Kondo problems

Eugene Demler, J. Ignacio Cirac, Mari Carmen Ba\~nuls, Tao Shi, Yuto Ashida

arxiv:1802.03861 v3 · 2018-02-12 · cond-mat.str-el · cond-mat.quant-gas · cond-mat.stat-mech · 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{ZA4MSRJUJNGIF5KUL6H6G44CKN}

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	2026-05-18T00:10:54.575978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c838c945344b4c82f5545f8fe373825353a6deb862dfc9633433715c9e9f651f

Aliases

arxiv: 1802.03861 · arxiv_version: 1802.03861v3 · doi: 10.48550/arxiv.1802.03861 · pith_short_12: ZA4MSRJUJNGI · pith_short_16: ZA4MSRJUJNGIF5KU · pith_short_8: ZA4MSRJU

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/ZA4MSRJUJNGIF5KUL6H6G44CKN \
  | 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: c838c945344b4c82f5545f8fe373825353a6deb862dfc9633433715c9e9f651f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "112e88774b2cbfa12f06b9ab0c7e1c06fd652b8cb99f7dbcb2fc94e1f53e2819",
    "cross_cats_sorted": [
      "cond-mat.quant-gas",
      "cond-mat.stat-mech",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "2018-02-12T01:52:55Z",
    "title_canon_sha256": "f1951d7249e37206a92e86f21795f36c27cc7726ae394a5ba6e91ec5e1a3090b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03861",
    "kind": "arxiv",
    "version": 3
  }
}