论文标题
当地Lorentz对称性的无边界重力电荷
Null boundary gravitational charges from local Lorentz symmetries
论文作者
论文摘要
在本文中，我们重新审视了纽曼 - 芬罗斯形式主义的无效边界重力电荷，并特别强调了当地洛伦兹转型的指控。我们发现，从当地的洛伦兹转换中获得了另一种电荷，而新的电荷纯粹来自霍尔斯特期。这揭示了一个了不起的事实，即不改变经典运动方程的琐碎术语不仅可以通过对边界指控的贡献来影响自由度的边界，而且还具有创造新的边界自由度的权利。
In this paper, we revisit the null boundary gravitational charge in the Newman-Penrose formalism with special emphasis on the charges from local Lorentz transformations. We find that there is one more charge derived from the local Lorentz transformation and the new charge is purely from the Holst term. This reveals a remarkable fact that trivial terms which do not change classical equations of motion can not only affect the boundary degrees of freedom through their contributions to the boundary charges but also have their own rights to create new boundary degrees of freedom.
