发表机构
Universidad Complutense de Madrid; Universität Oldenburg（马德里康普顿斯大学; 奥尔登堡大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究爱因斯坦 - 麦克斯韦理论中静态带电埃利斯 - 布朗尼科夫虫洞的非径向准正则模谱，推导微扰方程并采用切比雪夫谱方法计算谱，确定电荷对阻尼时间和振荡频率的影响，发现非径向极向不稳定性，为带电虫洞动力学可行性研究提供新视角。
AI 中文摘要
我们研究了爱因斯坦 - 麦克斯韦理论中与幻影标量场最小耦合的静态带电埃利斯 - 布朗尼科夫虫洞的非径向准正则模谱。背景解已知且有三种类型：亚临界、临界和超临界，在其存在域边界都趋近于极端雷斯纳 - 诺德斯特龙几何。我们推导了轴向和极向扇区的线性微扰方程，计算了相应谱。无电荷极限重现已知谱并呈现电磁等谱性。对于带电构型，我们追踪了三个解族的轴向和极向分支，确定了电荷对阻尼时间和振荡频率的影响。特别是发现接近极端雷斯纳 - 诺德斯特龙极限时电荷可大幅降低阻尼率。还发现了非径向极向不稳定性，在足够大虫洞质量的基本\(l = 2\)分支中最明显。此不稳定性与常见径向埃利斯 - 布朗尼科夫不稳定性不同，表明非径向扇区对带电虫洞的动力学可行性施加了额外限制。
英文摘要
We investigate the nonradial quasinormal-mode spectrum of static charged Ellis--Bronnikov wormholes in Einstein--Maxwell theory minimally coupled to a phantom scalar field. The background solutions are known in closed form and comprise three classes: subcritical, critical and supercritical, which all approach the extremal Reissner--Nordström geometry at the boundary of their domain of existence. We derive the linear perturbation equations for axial and polar sectors, including the coupled gravitational, electromagnetic and phantom-scalar degrees of freedom, and compute the corresponding spectra by means of a Chebyshev spectral method. The uncharged limit reproduces the known Ellis--Bronnikov spectrum and exhibits the expected electromagnetic isospectrality. For charged configurations we track the axial and polar branches across the three families of solutions and identify the effect of the charge on the damping times and oscillation frequencies. In particular, we find that charge can substantially reduce damping rates as the extremal Reissner--Nordström limit is approached. We also uncover a nonradial polar instability, most clearly visible in the fundamental $l=2$ branch for sufficiently large wormhole masses. This instability is distinct from the familiar radial Ellis--Bronnikov instability and shows that the nonradial sector imposes additional constraints on the dynamical viability of charged wormholes.
Comments35 pages, 19 figures, 12 tables; v2: added references, matches published version
Journal refPhys. Rev. D 114, 084019 (2026)
