arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1608.00685gr-qc
收藏

次-次领先软引力子与大超同态

Sub-subleading soft gravitons and large diffeomorphisms

Miguel Campiglia, Alok Laddha

摘要:

我们提出了强有力的证据表明,在半经典(树级)引力的子subleading软定理发现的Cachazo和Strominger是等价的保守的渐近电荷相关联的一类新的向量场不包含在以前的扩展BMS代数。我们的分析至关重要地依赖于从一个新的角度分析迄今为止建立的软定理和沃德恒等式之间的等价关系。在这个过程中,我们自然(重新)发现一类“磁”收费在零无穷大,与对偶的外尔张量。

英文摘要:

We present strong evidence that the sub-subleading soft theorem in semi-classical (tree level) gravity discovered by Cachazo and Strominger is equivalent to the conservation of asymptotic charges associated to a new class of vector fields not contained within the previous extensions of BMS algebra. Our analysis crucially relies on analyzing the hitherto established equivalences between soft theorems and Ward identities from a new perspective. In this process we naturally (re)discover a class of `magnetic' charges at null infinity that are associated to the dual of the Weyl tensor.

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。

↑