论文标题
循环校正的旋律柔软定理和天体应力调节器
Loop-corrected subleading soft theorem and the celestial stress-tensor
论文作者
论文摘要
我们证明，只要坚硬和软磁通分别代表零无限的延长的BMS代数，就可以自动遵循单循环精确的旋转式软吸引力定理。这证实了超级反抗是重力$ \ mathcal {s} $ - 矩阵超出半经典制度的真正对称性。与先前的提议相反，对单循环校正的天体应力调节是从重力相空间分析中进行的，并且不需要添加发散的对抗。此外，我们还表明，辐射相空间因子上的互合式形式将其分为硬和软扇区，并且所得的规范发电机与正确的BMS通量完全一致。
We demonstrate that the one-loop exact subleading soft graviton theorem automatically follows from conservation of the BMS charges, provided that the hard and soft fluxes separately represent the extended BMS algebra at null infinity. This confirms that superrotations are genuine symmetries of the gravitational $\mathcal{S}$-matrix beyond the semiclassical regime. In contrast with a previous proposal, the celestial stress-tensor accounting for the one-loop corrections follows from the gravitational phase space analysis and does not require the addition of divergent counterterms. In addition, we show that the symplectic form on the radiative phase space factorises into hard and soft sectors, and that the resulting canonical generators precisely coincide with the correct BMS fluxes.
