arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2402.07237math.DG
收藏

Lorentz-Minkowski空间中的不变$λ$-平移子

Invariant $λ$-translators in Lorentz-Minkowski space

Antonio Bueno, Irene Ortiz

AI总结:

本文研究Lorentz-Minkowski空间中在1参数平移和旋转群下不变的$λ$-平移子,推导了柱面情形的显式参数化,并通过分析非线性自治系统揭示了旋转$λ$-平移子的定性性质。

摘要:

给定$λ\in\mathbb{R}$和$\textbf{v}\in\mathbb{L}^3$,速度为$\textbf{v}$的$λ$-平移子是$\mathbb{L}^3$中的浸入曲面,其平均曲率满足$H=\langle N,\textbf{v}\rangle+λ$,其中$N$是单位法向量场。当$λ=0$时,我们落入平均曲率流的平移孤子类。本文研究在1参数平移和旋转群下不变的$\mathbb{L}^3$中的$λ$-平移子。前者为柱面曲面,并找到了显式参数化,同时区分了直纹方向与$λ$-平移子的因果性。对于旋转$λ$-平移子,我们区分了类空和类时旋转,并通过分析生成曲线坐标函数所满足的非线性自治系统,展示了旋转$λ$-平移子的定性性质。

英文摘要:

Given $λ\in\mathbb{R}$ and $\textbf{v}\in\mathbb{L}^3$, a $λ$-translator with velocity $\textbf{v}$ is an immersed surface in $\mathbb{L}^3$ whose mean curvature satisfies $H=\langle N,\textbf{v}\rangle+λ$, where $N$ is a unit normal vector field. When $λ=0$, we fall into the class of translating solitons of the mean curvature flow. In this paper we study $λ$-translators in $\mathbb{L}^3$ that are invariant under a 1-parameter group of translations and rotations. The former are cylindrical surfaces and explicit parametrizations are found, distinguishing on the causality of both the ruling direction and the $λ$-translators. In the case of rotational $λ$-translators we distinguish between spacelike and timelike rotations and exhibit the qualitative properties of rotational $λ$-translators by analyzing the non-linear autonomous system fulfilled by the coordinate functions of the generating curves.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑