Pith Number

pith:PXA5EF2O

pith:2025:PXA5EF2O2LCDI2YQ5F4WJOMDER

not attested not anchored not stored refs resolved

Finite parts of inflationary loops II: A streamlined UV in-in algorithm and distinguishable signatures

Flavio Riccardi, Guillermo Ballesteros, Jes\'us Gamb\'in Egea

A streamlined algorithm for in-in loop integrals reveals an apparent difficulty renormalizing with Hamiltonian counterterms and isolates distinguishable finite parts in the one-loop bispectrum.

arxiv:2512.20467 v2 · 2025-12-23 · hep-th · astro-ph.CO · gr-qc · hep-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{PXA5EF2O2LCDI2YQ5F4WJOMDER}

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.

Claims

C1strongest claim

The method leads us to identify an apparent difficulty to renormalize with Hamiltonian counterterms within the in-in formalism. We also discuss the importance of the finite parts of loop corrections that can be distinguished from their associated counterterm contributions.

C2weakest assumption

That the streamlined UV extraction via dimensional regularization fully captures the finite parts without residual scheme dependence or that the chosen interactions in EFT inflation produce a genuinely distinguishable one-loop bispectrum contribution independent of counterterm choices.

C3one line summary

A new UV in-in algorithm for inflationary loops identifies renormalization difficulties and distinguishable finite corrections to the one-loop bispectrum in EFT inflation.

References

54 extracted · 54 resolved · 24 Pith anchors

[1] Finite parts of inflationary loops, 2025

[2] One-loop renormalization of the effective field theory of inflationary fluctuations from gravitational interactions,

[3] Freezing of the renormalized one-loop primordial scalar power spectrum,

[4] J. Kristiano and J. Yokoyama, “Inflationary background renormalization,”arXiv:2504.18514 [hep-th]

[5] Brownian motion of a quantum oscillator, 1961

Formal links

2 machine-checked theorem links

Cited by

1 paper in Pith

Fixing the Renormalization of Inflationary Loops via Ward Identities

Receipt and verification

First computed	2026-05-17T23:39:04.559382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dc1d2174ed2c4346b10e97964b98324526df40dd1194fcb9095893b215c2570

Aliases

arxiv: 2512.20467 · arxiv_version: 2512.20467v2 · doi: 10.48550/arxiv.2512.20467 · pith_short_12: PXA5EF2O2LCD · pith_short_16: PXA5EF2O2LCDI2YQ · pith_short_8: PXA5EF2O

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/PXA5EF2O2LCDI2YQ5F4WJOMDER \
  | 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: 7dc1d2174ed2c4346b10e97964b98324526df40dd1194fcb9095893b215c2570

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69b1736137314de17beea26527865cabe6fc2480b2d93b578cad6fc587f2404e",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2025-12-23T16:02:15Z",
    "title_canon_sha256": "20edc92d6f2747c3e3dccd5bfd8e0ddf67f26d9c7088799a6f94fff7cb35c486"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.20467",
    "kind": "arxiv",
    "version": 2
  }
}