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模型条件下静态黑洞热力学的程函品质因子参数化

Photon sphere jet equivalence and the non-uniqueness of black-hole thermodynamics

Nikko John Leo S. Lobos, Emmanuel T. Rodulfo

arXiv 2607.20573首次发表:更新:

发表机构

De La Salle University(德拉萨大学)

机构由 AI 辅助整理,请以论文原文为准。

AI 中文总结

研究复准正则频率对静态球对称黑洞几何与热力学的参数化,通过特定比率重建参数和尺度,计算有限多极误差,表明该构造是模型依赖逆过程,应用于引力波观测需更多微扰扇区。

AI 中文摘要

我们研究了一个复准正则频率如何参数化规定的静态、球对称黑洞族的几何结构和模型条件热力学。对于程函极限下的最小耦合无质量测试标量,比率\(\chi=\omega_R\tau=\omega_R/\omega_I = 2Q\)消除了整体质量尺度。若\(\chi\)在一个无量纲参数中是单射的,则该参数和几何尺度可在所选族内重建。归一化度规确定视界和霍金温度,而瓦尔德熵需要引力作用。对于RN形式族,\(\chi\)确定\(u = q^2\)但不确定电荷符号。常耦合静态MOG度规在\(\mathcal M=(1+\alpha)m_{\rm MOG}\)和\(u=\alpha/(1+\alpha)\)下精确为RN;因此,每个多极和泛音在映射背景上的完整最小耦合标量谱相同。两种赋值温度相等但与作用相关的熵不同。切比雪夫和WKB - 帕德计算量化了有限多极误差,在测试的\(l = 2\) RN网格上最大程函比率误差为\(2.1\times10^{-3}\)。该构造是模型依赖的逆过程,而非理论选择器。将其应用于引力波观测需要超出测试场程函近似的适当张量、矢量和标量微扰扇区。

英文摘要

We examine whether scalar eikonal quasinormal-mode data determine black-hole thermodynamics. For static, spherically symmetric, asymptotically flat, nonextremal geometries, we prove that the formal fixed-overtone expansion of a neutral, minimally coupled, massless scalar through order $L^{-N}$ depends only on the $(2N+2)$ jet of the lapse at the unstable photon sphere. For every finite $N$, real-analytic deformations can preserve this jet and the asymptotic Reissner--Nordström coefficients while changing the surface gravity and Hawking temperature. We also construct a nonanalytic $C^\infty$ deformation that is flat at the photon sphere. This deformation preserves the complete formal eikonal series to every algebraic order but changes the horizon position, temperature, and Einstein area entropy. A nonempty charged subfamily satisfies the weak energy condition as an effective Einstein source. Together, these four results establish the new finite-jet and all-orders thermodynamic obstruction. To separate geometric information from action-dependent information, we incorporate a previously established Reissner--Nordström--MOG comparison. The mapped backgrounds have identical normalized metrics, neutral-scalar boundary-value problems, exact scalar spectra, and Hawking temperatures, yet their Wald entropies differ because their curvature couplings differ. The resulting hierarchy shows that local photon-sphere data do not determine horizon thermodynamics and that even exact action-blind scalar data do not determine gravitational entropy. Agreement of the formal eikonal expansions for the deformed metrics does not imply exact finite-$\ell$ isospectrality. Global differences may appear beyond every algebraic order. Thermodynamic reconstruction from eikonal ringdown is therefore conditional on assumptions about the global metric and the gravitational action.

Comments2 figures, 21 pages

论文原文

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