Pith Number

pith:FXYL77EB

pith:2004:FXYL77EBF5NTRLRD252UCLVUZF

not attested not anchored not stored refs pending

Can dark energy evolve to the Phantom?

Alexander Vikman

arxiv:astro-ph/0407107 v4 · 2004-07-06 · astro-ph · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FXYL77EBF5NTRLRD252UCLVUZF}

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

16 papers in Pith

The Coherence Principle: A Falsifiable Prior for Model Selection from the Grammar of Theories

A short review on Quintom dark energy theory

Exploring the Dark Sector: Interacting Radiation in Light of Modern Cosmological Probes

Charging Across the Phantom Divide with Modified Gravity

Effective Phantom Dark Energy: What Cosmological Reconstruction Does and Does Not Imply

Receipt and verification

First computed	2026-07-04T14:13:33.486649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2df0bffc812f5b38ae23d775412eb4c941abc53c4c9f85a4101840ecfa20d997

Aliases

arxiv: astro-ph/0407107 · arxiv_version: astro-ph/0407107v4 · doi: 10.48550/arxiv.astro-ph/0407107 · pith_short_12: FXYL77EBF5NT · pith_short_16: FXYL77EBF5NTRLRD · pith_short_8: FXYL77EB

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/FXYL77EBF5NTRLRD252UCLVUZF \
  | 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: 2df0bffc812f5b38ae23d775412eb4c941abc53c4c9f85a4101840ecfa20d997

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8ef7956e32b6f3cde5c60118f6a226ba82b941c425296c83da0a7b2a1cf9ecf",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-07-06T13:59:33Z",
    "title_canon_sha256": "186837738f364f1e8c01d31c4cbbaf966a8e01826f46090802c9e96aba420691"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0407107",
    "kind": "arxiv",
    "version": 4
  }
}