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arXiv · 2511.16012

Graybody factors and absorption cross-sections of non-exchange black holes in Instein-coupled scalar fields

Sihao Fan·Wenjun Guo·Chen Wu
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Abstract

This paper studies scalar field perturbations coupled with Einstein tensors of non-exchange black holes. We use the polarization method to calculate graybody factors and absorption cross-sections selected by different parameters, and verify the latest correspondence between graybody factors and quasi-normal states. The results show that the larger the value of the non-exchange parameter $\theta$ and the coupling constant $\eta$ introduced into the model, the smaller the absorption cross-section. Furthermore, we found that this correspondence is accurate for non-commutative black holes at the $1$ limit of large angular momentum quantum numbers.

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Sihao Fan, Wenjun Guo, Chen Wu. 2025-11-20. Graybody factors and absorption cross-sections of non-exchange black holes in Instein-coupled scalar fields. https://doi.org/10.1088/1361-6382%2Fae6caa

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