Grey-body factors and thermodynamics of asymptotically de Sitter black holes in generalized Proca theory

IF 4.9 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2026-09-01 DOI:10.1140/epjc/s10052-026-16289-5

Bekir Can Lütfüoğlu, Javlon Rayimbaev, Nuriddin Kurbonov, Sardor Murodov, Faisal Javed

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Abstract

Generalized Proca theory supplements gravity with a massive vector field whose derivative self-interactions can support black holes carrying primary vector hair. In the asymptotically de Sitter branch considered here, the de Sitter scale is effective: it is generated by the vector sector rather than imposed through a bare cosmological-constant term. We compute grey-body factors and effective absorption cross-sections for massive scalar, electromagnetic, and massless Dirac test fields on this background. The transmission curves are obtained from a sixth-order WKB barrier calculation and are compared with the quasinormal-mode reconstruction; the two descriptions mostly agree, with small visible differences at lower multipoles. Increasing the scalar mass raises and broadens the scalar barrier, suppresses transmission at fixed frequency, and shifts efficient transmission to higher frequencies. The couplings considerably affect the grey-body factors and black hole thermodynamics.

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广义Proca理论中渐近de Sitter黑洞的灰体因子和热力学

广义Proca理论用一个巨大的矢量场来补充引力，它的导数自相互作用可以支持携带主矢量毛的黑洞。在这里考虑的渐近德西特分支中，德西特标度是有效的：它是由矢量扇区产生的，而不是通过一个裸露的宇宙常数项强加的。在此背景下，我们计算了大质量标量场、电磁场和无质量狄拉克场的灰体因子和有效吸收截面。通过六阶WKB势垒计算得到了透射曲线，并与拟正态模重建结果进行了比较；这两种描述基本上是一致的，在较低的多极上有微小的可见差异。增加标量质量会提高和拓宽标量势垒，抑制固定频率的传输，并将有效传输转移到更高的频率。这种耦合对灰体因子和黑洞热力学有很大的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.