Rosenhaus Vladimir
Initiative for the Theoretical Sciences, The Graduate Center, City University of New York 365 Fifth Avenue, New York, New York 10016, USA.
Phys Rev Lett. 2022 Jul 15;129(3):031601. doi: 10.1103/PhysRevLett.129.031601.
String theory provides a compact integral expression for the tree-level scattering amplitude of an arbitrary number of light strings. We focus on amplitudes involving a few tachyons and many photons, with a special choice of polarizations and kinematics. We pick out a particular pole in the amplitude-one corresponding to successive photon scatterings, which lead to an intermediate state with a highly excited string in a definite state. This provides a physical process that creates a highly excited string. The observed erratic behavior of the amplitude suggests that this may serve as a simple and explicit illustration of chaos in many-particle scattering.
弦理论为任意数量的轻弦的树图水平散射振幅提供了一个紧凑的积分表达式。我们专注于涉及少量快子和多个光子的振幅，采用特殊的极化和运动学选择。我们在振幅中挑出一个特定的极点——对应于连续光子散射的极点，这会导致一个处于确定状态的高度激发弦的中间态。这提供了一个产生高度激发弦的物理过程。振幅中观察到的不规则行为表明，这可能作为多粒子散射中混沌的一个简单而明确的例证。
