论文标题
QED型相互作用的动力自旋极化的量子动力学理论
Quantum kinetic theory for dynamical spin polarization from QED-type interaction
论文作者
论文摘要
我们通过量子动力学理论中的moller散射研究了无质量电子的动力学自旋极化，从而探测了局部热平衡中的电子血浆。我们得出一个轴向动力学方程，在存在碰撞项的情况下描述了动态自旋演变，最高$ \ Mathcal {o}（\ hbar）$的量子校正以及通过使用硬性弹力（HTL）近似型号的型号来分配型号的型号，并通过使用硬性弹力（HTL）近似速率来耦合。当电子探针接近局部平衡时，我们将碰撞项进一步简化为松弛时间表达。我们的动力学方程可以在未来的数值模拟中实现，以进行动态自旋极化。
We investigate the dynamical spin polarization of a massless electron probing an electron plasma in locally thermal equilibrium via the Moller scattering from the quantum kinetic theory. We derive an axial kinetic equation delineating the dynamical spin evolution in the presence of the collision term with quantum corrections up to $\mathcal{O}(\hbar)$ and the leading-logarithmic order in coupling by using the hard-thermal-loop (HTL) approximation, from which we extract the spin-polarization rate induced by the spacetime gradients of the medium. When the electron probe approaches local equilibrium, we further simplify the collision term into a relaxation-time expression. Our kinetic equation may be implemented in the future numerical simulations for dynamical spin polarization.
