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arXiv 2005.08671math-phmath.MP
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关于具有常Ricci标量曲率的$2$维Lorentz流形的共形刻画的注记

Notes on a conformal characterization of $2$-dimensional Lorentzian manifolds with constant Ricci scalar curvature

Nicolò Cangiotti, Mattia Sensi

摘要:

给出了具有常Ricci标量曲率的$2$维Lorentz流形的一个刻画.众所周知,每一个$2$维Lorentz流形都是共形平坦的,因此我们用共形因子改写了Ricci标量曲率,并研究了相应微分方程的解.提供了几个显著的例子。

英文摘要:

We present a characterization of $2$-dimensional Lorentzian manifolds with constant Ricci scalar curvature. It is well known that every $2$-dimensional Lorentzian manifolds is conformally flat, so we rewrite the Ricci scalar curvature in terms of the conformal factor and we study the solutions of the corresponding differential equations. Several remarkable examples are provided.

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