论文标题
经典的外壳电流
Classical off-shell currents
论文作者
论文摘要
我们认为，在经典极限的情况下，我们考虑了两个巨大颗粒和$ n $ sobseless玻色子的树级离子电流，可以将其融合到$ n+2 $散射幅度的经典极限中。我们表明，用与巨大颗粒相关的连贯的波功能使电流打扮导致最近提出的世界线量子场理论（WQFT）路径积分。如此构造的电流编码经典运动方程的解决方案，以便将它们应用于经典极限相关的上下文，包括硬热环。我们在标量，仪表和重力理论中给出了这些电流的几个例子。
We consider tree-level off-shell currents of two massive particles and $n$ massless bosons in the classical limit, which can be fused into the classical limit of $n+2$ scattering amplitudes. We show that dressing up the current with coherent wave-functions associated with the massive particles leads to the recently proposed Worldline Quantum Field Theory (WQFT) path integral. The currents thus constructed encode solutions of classical equations of motion so they can be applied to contexts where the classical limit is relevant, including hard thermal loops. We give several examples of these currents in scalar, gauge and gravitational theories.
