On the transverse-traceless gauge condition when matter is presented  

作　　者：Yadong Xue Xiaokai He Zhoujian Cao 

机构地区：[1]Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China [2]Department of Astronomy,Beijing Normal University,Beijing 100875,China [3]School of Mathematics and Statistics,Hunan First Normal University,Changsha 410205,China [4]School of Fundamental Physics and Mathematical Sciences,Hangzhou Institute for Advanced Study,UCAS,Hangzhou 310024,China

出　　处：《Communications in Theoretical Physics》2025年第3期94-100,共7页理论物理通讯(英文版)

基　　金：supported in part by the National Key Research and Development Program of China Grant No.2021YFC2203001;in part by the NSFC(Grant Nos.11920101003,12021003 and 12005016);supported by‘the Fundamental Research Funds for the Central Universities’of Beijing Normal University;supported by the NSF of Hunan province(Grant No.2023JJ30179)。

摘　　要：The transverse-traceless gauge condition is an important concept in the theory of gravitational waves.It is well known that a vacuum is one of the key conditions to guarantee the existence of the transverse-traceless gauge.Although it is thin,the interstellar medium is ubiquitous in the Universe.Therefore,it is important to understand the concept of gravitational waves when matter is presented.Bondi-Metzner-Sachs theory has solved the gauge problem related to gravitational waves.But it does not help with cases when the gravitational wave propagates in matter.This paper discusses possible extensions of the transverse-traceless gauge condition to Minkowski perturbation with matter presented.

关 键 词：gravitational wave transverse-traceless gauge condition 

分 类 号：O412.1[理学—理论物理]