研究了Schwarzschild黑洞外部区域中解耦的Maxwell方程组的解。在静止区域,史瓦西坐标$r$的范围超过$2M < r_1 < r < r_2$,我们得到的衰减率$t^{-1}$的麦克斯韦场的所有组件。我们使用向量场方法,不需要球谐分解。在传出区域,其中的Regge-Wheeler龟坐标是大的,$r_*>εt$,我们得到的零组件的$|ϕ_+| \sim |α| < C r^{-5/2}$,$|ϕ_0| \sim |ρ| + |σ| < C r^{-2} |t-r_*|^{-1/2}$,和$|ϕ_{-1}| \sim |\underlineα| < C r^{-1} |t-r_*|^{-1}$的速度衰减。沿着事件视界和进入区域,当$r_*<0$和$t+r_*1$时,所有分量(相对于进入零基归一化)以$C \uout^{-1}$的速率衰减,$\uout=t+r_*$在外部区域。
英文摘要:
We study solutions of the decoupled Maxwell equations in the exterior region of a Schwarzschild black hole. In stationary regions, where the Schwarzschild coordinate $r$ ranges over $2M < r_1 < r < r_2$, we obtain a decay rate of $t^{-1}$ for all components of the Maxwell field. We use vector field methods and do not require a spherical harmonic decomposition.
In outgoing regions, where the Regge-Wheeler tortoise coordinate is large, $r_*>εt$, we obtain decay for the null components with rates of $|ϕ_+| \sim |α| < C r^{-5/2}$, $|ϕ_0| \sim |ρ| + |σ| < C r^{-2} |t-r_*|^{-1/2}$, and $|ϕ_{-1}| \sim |\underlineα| < C r^{-1} |t-r_*|^{-1}$. Along the event horizon and in ingoing regions, where $r_*<0$, and when $t+r_*1$, all components (normalized with respect to an ingoing null basis) decay at a rate of $C \uout^{-1}$ with $\uout=t+r_*$ in the exterior region.
Nonlinear stability for the Maxwell-Born-Infeld system on a Schwarzschild background
本文证明了在固定的Schwarzschild背景下,Maxwell-Born-Infeld(MBI)系统解的小数据整体存在性。这个系统出现在弦论的背景下,由于其张量和准线性性质,可以被看作是背景度规本身稳定性的非线性模型问题。MBI系统模拟非线性电磁并且不显示双折射。在我们的证明中的关键要素在于观察到存在一个一阶微分变换,该变换将场的极端分量所满足的自旋$\pm 1$ Teukolsky方程的解带入“好”方程(Fakerell-Ipser方程)的解。这一战略是在[F。Pasqualotto,The spin $\pm 1$ Teukolsky equations and the Maxwell system on Schwarzschild,Annales Henri Poincaré,20(4):1263-1323,2019,arXiv:1612.07244] for the linear Maxwell field on Schwarzschild.我们发现,类似的Fackerell-Ipser方程的MBI系统在一个固定的史瓦西背景,但非线性耦合。为了从根本上解耦这些右侧,我们设置了一个自举参数。我们使用Dafermos和Rodnianski在[M.达费莫斯和我Rodnianski,一种新的物理空间方法来衰减波动方程与黑洞时空的应用,在第十六届国际数学物理大会上,Pavel E…
Coulomb Sectors and Scattering for Maxwell-Higgs Fields on Schwarzschild and Slowly Rotating Kerr Backgrounds
Theoretical Physics Laboratory, Theoretical High Energy Physics Research Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung(万隆理工学院数学与自然科学学院理论物理实验室、理论高能物理研究部)
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Low energy solutions for singularly perturbed coupled nonlinear systems on a Riemannian manifold with boundary
设(M,g)是光滑的、紧的、边界光滑的黎曼流形,n= dim M= 2,3.设M的边界是M的一个n-1维光滑子流形。考虑M上的奇摄动非线性系统,即Klein-Gordon-Maxwell-Proca系统或Scrhoedinger-Maxwell系统的Klein-Gordon-Maxwell系统.利用Lusternik Schnirelmann范畴,证明了当扰动参数较小时,低能解的个数依赖于M边界的拓扑性质.此外,这些解决方案有一个唯一的极大点,位于边界上。