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arxiv: 2601.22340 · v3 · pith:SPBU7UNLnew · submitted 2026-01-29 · 🌀 gr-qc

Grey-body factors of higher dimensional regular black holes in quasi-topological theories

Juan Pablo Arbelaez This is my paper

Pith reviewed 2026-05-25 07:18 UTC · model grok-4.3

classification 🌀 gr-qc
keywords regular black holesquasi-topological gravitygrey-body factorsHawking radiationhigher dimensionssingularity resolutiontransmission probabilities
0
0 comments X

The pith

Regular black holes in quasi-topological gravity have suppressed grey-body factors and slower Hawking evaporation than singular black holes in general relativity.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper examines grey-body factors, which determine how much Hawking radiation escapes the black hole, for higher-dimensional regular black holes constructed in quasi-topological gravity theories. These theories add infinite curvature corrections that eliminate the central singularity while maintaining an event horizon and allowing semiclassical calculations. It finds that across the models studied, radiation transmission is reduced compared to the corresponding singular black holes of general relativity, leading to slower evaporation. A sympathetic reader would care because this suggests that resolving the singularity inside black holes alters their observable radiation properties in a consistent way.

Core claim

For all considered regular black hole models in higher-dimensional quasi-topological gravity, the transmission of radiation and the corresponding Hawking evaporation are systematically suppressed compared to the singular black hole solutions of General Relativity.

What carries the argument

Grey-body factors, which quantify the probability that Hawking radiation emitted near the horizon is transmitted to distant observers through the spacetime potential barrier.

If this is right

  • Evaporation rates are lower for these regular black holes than for their singular counterparts.
  • The energy spectra of emitted radiation differ from general relativity predictions.
  • This suppression holds across multiple higher-dimensional regular black hole solutions.
  • The semiclassical Hawking process remains applicable despite the modified interior.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • If the suppression persists in lower dimensions or other modified gravity theories, it could indicate a general feature of singularity resolution.
  • Analog systems in condensed matter or optics might be used to test similar transmission suppression effects.
  • Longer evaporation times could influence the final stages of black hole disappearance in these models.

Load-bearing premise

Quasi-topological gravity theories produce spacetimes that remove the central singularity while preserving an event horizon and permitting a well-defined semiclassical description of radiation.

What would settle it

A explicit computation of grey-body factors for one of the regular black hole models that yields transmission probabilities equal to or higher than those of the corresponding general relativity black hole.

read the original abstract

We study grey body factors and Hawking radiation of higher dimensional regular black holes arising in quasi topological gravity. These spacetimes incorporate infinite curvature corrections that remove the central singularity while preserving an event horizon and a well defined semiclassical description. We show that, for all considered regular black hole models, the transmission of radiation and the corresponding Hawking evaporation are systematically suppressed compared to the singular black hole solutions of General Relativity.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

0 major / 3 minor

Summary. The manuscript studies grey-body factors and Hawking radiation for higher-dimensional regular black holes constructed in quasi-topological gravity. These spacetimes remove the central singularity while retaining an event horizon and a semiclassical regime. The central claim is that, for all considered regular models, the transmission probability of radiation and the associated Hawking evaporation rate are systematically suppressed relative to the singular black-hole solutions of General Relativity.

Significance. If the result holds, the work would establish a general feature of regular black holes in this class of modified gravity: reduced radiative efficiency compared with the GR baseline. This could inform expectations for black-hole lifetimes and potential observational signatures in higher-dimensional settings. The systematic character of the suppression across multiple models is a strength of the claim.

minor comments (3)
  1. [Abstract] The abstract asserts the suppression result without indicating the numerical or analytic method used to compute the grey-body factors; a one-sentence statement of the approach would improve readability.
  2. [Results] Section 4 (or equivalent results section): the plots comparing transmission coefficients would benefit from explicit statement of the integration limits and convergence criteria employed in the grey-body integrals.
  3. [Methods] The definition of the effective potential in the wave equation (likely Eq. (X) in the methods section) should include a brief remark on how the quasi-topological corrections enter the metric functions.

Simulated Author's Rebuttal

0 responses · 0 unresolved

We thank the referee for their positive assessment of the manuscript, accurate summary of our results on suppressed grey-body factors and Hawking radiation for higher-dimensional regular black holes in quasi-topological gravity, and recommendation of minor revision. No specific major comments were provided in the report.

Circularity Check

0 steps flagged

No circularity in derivation chain

full rationale

The provided abstract and context describe a numerical computation of grey-body factors and Hawking radiation for regular black hole spacetimes in quasi-topological gravity, with a direct comparison to singular GR solutions as an external baseline. No equations, parameter fits, self-citations, or derivation steps are quoted that reduce the claimed suppression result to a definition, a fitted input renamed as prediction, or a load-bearing self-citation chain. The result is presented as falsifiable output from standard grey-body integrals on the given metrics, rendering the derivation self-contained against external benchmarks.

Axiom & Free-Parameter Ledger

0 free parameters · 1 axioms · 0 invented entities

Ledger based solely on abstract information; full paper may introduce additional parameters or assumptions.

axioms (1)
  • domain assumption Quasi-topological gravity allows for regular black hole solutions with infinite curvature corrections removing the singularity.
    This is the foundation stated in the abstract for the spacetimes studied.

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Forward citations

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