The constraint on modified black holes with extreme mass ratio inspirals

IF 4.2 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2025-04-04 DOI:10.1140/epjc/s10052-025-14100-5

Chao Zhang, Guoyang Fu, Yungui Gong

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Abstract

The low-energy effective action of String Theory introduces corrections to the dilaton-graviton sector, resulting in deformed black holes beyond general relativity. We analyze extreme mass-ratio inspiral systems (EMRIs), where a stellar-mass object spirals into a slowly rotating supermassive black hole including a distinct deviation parameter. This study examines the effects of this deformation on the rate of change of orbital energy and angular momentum, orbital evolution, and phase dynamics, incorporating leading-order post-Newtonian corrections. The String theory parameter \(\alpha \) will accelerate the EMRI merger because of the extra energy and angular momentum fluxes carried away by corrections to the dilaton-graviton sector. With 1-year observations of EMRIs, we employ the Fisher information matrix method to evaluate the potential for detecting deviations from general relativity through space-based gravitational wave detectors that utilize time-delay interferometry to suppress laser noise. The constraint on modified black holes, \(\varDelta \alpha \preceq 10^{-5}\), is almost the same with and without the time-delay interferometry combination. This analysis enhances our understanding and underscores the crucial role of observations in advancing gravitational phenomena within String Theory.

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对具有极端质量比吸气的修正黑洞的约束

弦理论的低能量有效作用引入了对膨胀-引力子扇区的修正，导致广义相对论之外的变形黑洞。我们分析了极端质量比吸气系统（EMRIs），其中一个恒星质量物体螺旋进入一个缓慢旋转的超大质量黑洞，其中包含一个明显的偏差参数。本研究考察了这种变形对轨道能量和角动量变化率、轨道演化和相位动力学的影响，并结合了首阶后牛顿修正。弦理论参数\(\alpha \)将加速EMRI合并，因为膨胀-引力子扇区的修正带走了额外的能量和角动量通量。通过对EMRIs的1年观测，我们采用Fisher信息矩阵方法来评估利用时间延迟干涉测量抑制激光噪声的天基引力波探测器检测广义相对论偏差的潜力。对修正黑洞的约束，\(\varDelta \alpha \preceq 10^{-5}\)，在有和没有时滞干涉组合的情况下几乎是相同的。这一分析增强了我们的理解，并强调了观测在弦理论中推进引力现象方面的关键作用。

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.