发表机构
School of Mathematics and Statistics, Fuzhou University; Institute of Theoretical Physics, National University of Uzbekistan; Kimyo International University in Tashkent; Tashkent State Technical University; Department of Physics, Shanghai University; Tashkent State Transport University; Karakalpak State University（福州大学数学与统计学院; 乌兹别克斯坦国立大学理论物理研究所; 塔什干化学国际大学; 塔什干国立技术大学; 上海大学物理系; 塔什干国立交通大学; 卡拉卡尔帕克国立大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究带电 Simpson-Visser-AdS 时空中的粒子动力学与 QPO，发现正则化参数提升基本 QPO 频率，观测数据在 4σ 水平排除 Schwarzschild 极限，但仅约束电荷与 AdS 曲率的简并组合。
AI 中文摘要
在本文中，我们研究了带电 Simpson-Visser-反德西特（AdS）时空中的粒子动力学与准周期振荡。我们首先分析了在电荷 $Q$、正则化参数 $b$ 与 AdS 半径 $l$ 的竞争影响下度规与黑洞视界的行为。度规函数的根揭示了三种不同拓扑类别之间的转变：具有不同内、外视界的非极端构型，具有单一简并视界的极端极限，以及严格正、无视界的虫洞几何。通过评估有效势，我们确定了这种修正几何如何移动最内稳定圆轨道（ISCO）并改变测试粒子的角动量与能量。此外，我们推导了开普勒频率、径向频率与垂直频率，以模拟准周期振荡（QPO）。我们表明，正则化参数 $b$ 与 AdS 半径 $l$ 之间的相互作用显著修改了双峰 QPO。特别是，$b$ 使基本 QPO 频率高于标准广义相对论背景所预测的值。来自两个黑洞双星的双峰高频 QPO 数据在约 $4\sigma$ 置信水平上不支持 Schwarzschild 极限，但仅约束了电荷与 AdS 曲率的一个简并组合，正则化参数完全不受数据约束。
英文摘要
In this article, we examine particle dynamics and Quasi-periodic oscillations within a charged Simpson-Visser-Anti-de Sitter (AdS) spacetime. We first analyze the behavior of the metric and black hole horizons under the competing impact of electric charge $Q$, regularization parameter $b$, and AdS radius $l$. The roots of the metric function reveal transitions between three distinct topological classes: non-extremal configurations featuring distinct inner and outer horizons, extremal limits with a single degenerate horizon, and strictly positive, horizonless wormhole geometries. By evaluating the effective potential, we determine how this modified geometry shifts the Innermost Stable Circular Orbit (ISCO) and alters the angular momentum and energy of test particles. Moreover, we derive the Keplerian, radial, and vertical frequencies to model quasi-periodic oscillations (QPOs). We show that the interplay between the regularization parameter $b$ and the AdS radius $l$ significantly modifies twin-peak QPOs. In particular, $b$ drives fundamental QPO frequencies higher than those predicted by standard general relativistic backgrounds. Twin-peak high-frequency QPO data from two black-hole binaries disfavor the Schwarzschild limit at $\sim\!4σ$, but constrain only a degenerate combination of charge and AdS curvature, leaving the regularization parameter entirely unconstrained by the data.
Comments15 Pages, 10 figures, 3 tables
