Pith Number

pith:CH2BAKO5

pith:2026:CH2BAKO5DLFTGNIEKZBYCF5BEM

not attested not anchored not stored refs pending

Generalizing the CPL Parametrization through Dark Sector Interaction

Mikel Artola, Ruth Lazkoz, Vincenzo Salzano

Interacting dark energy models generalized with a specific coupling kernel and CPL parametrization are not preferred over LambdaCDM by Bayesian evidence despite some frequentist tensions.

arxiv:2604.25373 v2 · 2026-04-28 · astro-ph.CO · gr-qc

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\usepackage{pith}
\pithnumber{CH2BAKO5DLFTGNIEKZBYCF5BEM}

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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.

Claims

C1strongest claim

Ultimately, our Bayesian model comparison reveals that no investigated IDE scenario is statistically preferred over the concordance ΛCDM model.

C2weakest assumption

The specific background interaction kernel Q = 3H(δ + η a)ρ_de is assumed to permit closed analytical expressions for the dark matter and dark energy densities while remaining physically motivated.

C3one line summary

Dynamical couplings in interacting dark energy models reduce deviations from LambdaCDM to 1.3-1.5 sigma and yield no Bayesian preference over the standard model.

Cited by

2 papers in Pith

Signatures of Modified Gravity Below $\mathcal{O}(10)$ Mpc in a Dynamical Dark Energy Background

Coupled quintessence with a potential from supergravity exhibits sign-changing interaction

Receipt and verification

First computed	2026-05-21T01:05:19.545300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11f41029dd1acb33350456438117a1230b446ffbe6b127e68c4c68a857f7b496

Aliases

arxiv: 2604.25373 · arxiv_version: 2604.25373v2 · doi: 10.48550/arxiv.2604.25373 · pith_short_12: CH2BAKO5DLFT · pith_short_16: CH2BAKO5DLFTGNIE · pith_short_8: CH2BAKO5

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/CH2BAKO5DLFTGNIEKZBYCF5BEM \
  | 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: 11f41029dd1acb33350456438117a1230b446ffbe6b127e68c4c68a857f7b496

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d06c0d41c5344d5f94bb5bb0113cc478228e7dff2edce2fc7f7d67c10d5edf4",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-04-28T08:38:43Z",
    "title_canon_sha256": "bbb49121ab7d100d552aada51a7e6ae1e9568ab9f22c50f84f9c2d92619d4f46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.25373",
    "kind": "arxiv",
    "version": 2
  }
}