Pith Number

pith:L3VF2TXL

pith:2026:L3VF2TXLIXB3OVTXCKJD3SJRNA

not attested not anchored not stored refs resolved

Scattering of electromagnetic field in quasi-topological gravity

Juan Pablo Arbelaez

Regular black holes in quasi-topological gravity shift electromagnetic absorption spectra away from the singular Tangherlini case.

arxiv:2604.26166 v1 · 2026-04-28 · gr-qc

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\usepackage{pith}
\pithnumber{L3VF2TXLIXB3OVTXCKJD3SJRNA}

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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

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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

Regularity effects lead to systematic deviations from the singular Tangherlini solution, manifested in shifts of the absorption spectrum and modifications of the effective photon sphere radius.

C2weakest assumption

The WKB-based approach accurately computes the greybody factors for electromagnetic perturbations across the relevant frequency range on the given regular black-hole background.

C3one line summary

Regular black holes in quasi-topological gravity produce shifted electromagnetic absorption spectra and modified photon sphere radii relative to singular Tangherlini solutions, with deviations suppressed as spacetime dimensions increase.

References

62 extracted · 62 resolved · 8 Pith anchors

[1] Hawking, Particle Creation by Black Holes, Commun 1975

[2] Nollert, TOPICAL REVIEW: Quasinormal modes: the characteristic ‘sound’ of black holes and neutron stars, Class 1999

[3] Quasi-Normal Modes of Stars and Black Holes 1999 · arXiv:gr-qc/9909058

[4] S.V. Bolokhov and M. Skvortsova, Review of Analytic Results on Quasinormal Modes of Black Holes, Grav. Cosmol.31(2025) 423 2025

[5] Quasinormal modes of black holes: from astrophysics to string theory 2011 · arXiv:1102.4014

Receipt and verification

First computed	2026-06-19T16:12:05.864213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5eea5d4eeb45c3b7567712923dc9316831f91306b76fa19ededcd674b65838a1

Aliases

arxiv: 2604.26166 · arxiv_version: 2604.26166v1 · doi: 10.48550/arxiv.2604.26166 · pith_short_12: L3VF2TXLIXB3 · pith_short_16: L3VF2TXLIXB3OVTX · pith_short_8: L3VF2TXL

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/L3VF2TXLIXB3OVTXCKJD3SJRNA \
  | 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: 5eea5d4eeb45c3b7567712923dc9316831f91306b76fa19ededcd674b65838a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b0143ef97e15bd9577e2f6bb233ff9976ac58f49d5047d28f3e3ef2caf43964",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2026-04-28T23:17:26Z",
    "title_canon_sha256": "e820d0289dff928f8d36944d4dada9ecb43044fb451f585ea205691dbc0950f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.26166",
    "kind": "arxiv",
    "version": 1
  }
}