I.E. Tamm Department of Theoretical Physics, Lebedev Physical Institute, Leninsky Prospect 53, 119991, Moscow, Russia.
Department of General and Applied Physics, Moscow Institute of Physics and Technology, Institutskiy per. 7, Dolgoprudnyi, 141700 Moscow Region, Russia.
Phys Rev Lett. 2023 Feb 17;130(7):071603. doi: 10.1103/PhysRevLett.130.071603.
Kerr-Schild double copy is shown to extend naturally to all free symmetric gauge fields propagating on (A)dS in any dimension. Similarly to the standard lower-spin case, the higher-spin multicopy comes along with the zeroth, single, and double copies. The masslike term of the Fronsdal spin s field equations fixed by gauge symmetry and the mass of the zeroth copy both appear to be remarkably fine-tuned to fit the multicopy pattern forming a spectrum organized by higher-spin symmetry. On the black hole side this curious observation fills up the list of miraculous properties of the Kerr solution.
克尔-施尔德对偶自然扩展到任意维数的（A）dS 上传播的所有自由对称规范场。与标准的低自旋情况类似，高自旋多副本伴随着零阶、单副本和双副本。规范对称性固定的 Fronsdal 自旋 s 场方程的质量项和零阶副本的质量似乎都被精确地调整以适应多副本模式，形成由更高自旋对称性组织的谱。在黑洞方面，这一奇特的观察结果填补了克尔解的神奇性质列表。
