具有λ的电真空直积时空中的脉冲波
Impulsive waves in electrovac direct product spacetimes with Lambda
摘要：
本文给出了两个常曲率2-空间的直积时空中的一族非扩张脉冲波。除了以前研究的Minkowski，（反）Nariai和Bertotti-Robinson宇宙中的脉冲，一个新的显式类脉冲波的特殊电真空Plebanski-Hacyan时空中传播的宇宙学常数λ的构造。特别地，描述了具有任意多极结构的零粒子产生的纯引力波。度规是更一般的II型昆特时空家族的脉冲成员。众所周知的pp波恢复为λ =0。
英文摘要：
A complete family of non-expanding impulsive waves in spacetimes which are the direct product of two 2-spaces of constant curvature is presented. In addition to previously investigated impulses in Minkowski, (anti-)Nariai and Bertotti-Robinson universes, a new explicit class of impulsive waves which propagate in the exceptional electrovac Plebanski-Hacyan spacetimes with a cosmological constant Lambda is constructed. In particular, pure gravitational waves generated by null particles with an arbitrary multipole structure are described. The metrics are impulsive members of a more general family of the Kundt spacetimes of type II. The well-known pp-waves are recovered for Lambda=0.
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