It is inferred that, in addition to the Coulomb and Newtonian forces, there should exist a third fundamental long-range force, which acts between intrinsic angular momenta. This inference is based on the quantum Einstein gravity, that is, the manifestly-covariant, BRS-invariant, canonically quantized theory of general relativity. The form of the potential of the third fundamental long-range force is determined by calculating the non-relativistic limit of the Bethe–Salpeter kernel in the lowest-order perturbation theory. The observability of this force is also discussed.

中文翻译：

---

可能存在第三种基本远程力量

可以推断，除了库仑力和牛顿力之外，还应该存在第三种基本的远程力，该力在固有角动量之间起作用。此推论基于爱因斯坦量子引力，即广义相对论的显式协变，BRS不变，规范量化理论。通过计算最低阶扰动理论中的Bethe–Salpeter核的非相对论极限，可以确定第三基本远程力的势能形式。还讨论了该力的可观察性。