Pith Number

pith:Y3KTKMRX

pith:2026:Y3KTKMRXB2BJKQ5SJOZZ62OK7R

not attested not anchored not stored refs resolved

Latent-Space Gaussian Processes for Dark-Energy Reconstruction from Observational \(H(z)\) Data

Jia-yan Jiang, Tong-Jie Zhang, Wei Hong

Placing a Gaussian process prior directly on dark-energy density f(z) yields viable reconstructions from Hubble data consistent with Lambda CDM.

arxiv:2605.13427 v1 · 2026-05-13 · astro-ph.CO

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\usepackage{pith}
\pithnumber{Y3KTKMRXB2BJKQ5SJOZZ62OK7R}

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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

The latent-f approach is therefore a viable alternative to latent-H, while current constraints are limited mainly by sparse high-redshift OHD and dependence on external priors.

C2weakest assumption

That the chosen Gaussian process kernel and external priors do not systematically bias the reconstruction of f(z) and Om(z) in the high-redshift regime where data coverage is poorest.

C3one line summary

Latent-f and latent-H Gaussian process reconstructions from OHD data both yield f(z), w(z), and Om(z) consistent with Lambda-CDM, with no strong predictive preference and small prior-dependent residuals mainly at high redshift.

References

96 extracted · 96 resolved · 40 Pith anchors

[1] denser high-z

[2] TheOm(z)diagnostic Fig. 7 provides a direct visual summary of the prior-dependentOm(z) behavior. Consistent with the real-data entries in Appendix Table X, the inferred ∆Om0.5,1.0 and ∆Om 0.5,1.5 inte 2025

[3] S. Weinberg, Rev. Mod. Phys.61, 1 (1989) 1989

[4] S. M. Carroll, Living reviews in relativity4, 1 (2001) 2001

[5] BeyondΛCDM: Problems, solutions, 13 and the road ahead 2016 · arXiv:1512.05356

Receipt and verification

First computed	2026-05-18T02:44:47.247756Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6d53532370e829543b24bb39f69cafc63d3b469d591f702cab43ccabb22bc24

Aliases

arxiv: 2605.13427 · arxiv_version: 2605.13427v1 · doi: 10.48550/arxiv.2605.13427 · pith_short_12: Y3KTKMRXB2BJ · pith_short_16: Y3KTKMRXB2BJKQ5S · pith_short_8: Y3KTKMRX

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/Y3KTKMRXB2BJKQ5SJOZZ62OK7R \
  | 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: c6d53532370e829543b24bb39f69cafc63d3b469d591f702cab43ccabb22bc24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e03b5cebe1e245766e7cdc53fe9ab455dadbdb0f57dd2d6d02ee946ee01bb67",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-05-13T12:22:36Z",
    "title_canon_sha256": "914bb1d6d43c87fa70161c8002a4fcc2f2253d2d4d2ac2dc06e7c04b37af1742"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13427",
    "kind": "arxiv",
    "version": 1
  }
}