论文标题
来自数字量子模拟的实时手性动力学
Real-time chiral dynamics from a digital quantum simulation
论文作者
论文摘要
可以使用$（1+1）$ - 尺寸巨大的schwinger模型中的手性异常来描述强磁场中的手性磁效应。我们使用IBM-Q数字量子模拟器对模型进行数字量子模拟，并在有限的$θ$ - 角和消失的量规耦合中进行量子耦合，并观察了通过全局{\ iT手性淬火}的相对论费用系统中引起的相应矢量电流 - 突然变化了刺激性化学势或$ $ $ $ chiral Chierity或$ chiral opper。在有限的费米昂质量上，这一电流似乎有其他贡献，这是由于手性的非反对性松弛而造成的。我们的结果与重离子碰撞和手性材料中的手性磁效应的实时动力学以及在强子煤层架的高能过程中建模。
The chiral magnetic effect in a strong magnetic field can be described using the chiral anomaly in the $(1+1)$-dimensional massive Schwinger model with a time-dependent $θ$-term. We perform a digital quantum simulation of the model at finite $θ$-angle and vanishing gauge coupling using an IBM-Q digital quantum simulator, and observe the corresponding vector current induced in a system of relativistic fermions by a global {\it chiral quench} -- a sudden change in the chiral chemical potential or $θ$-angle. At finite fermion mass, there appears an additional contribution to this current that stems from the non-anomalous relaxation of chirality. Our results are relevant for the real-time dynamics of chiral magnetic effect in heavy ion collisions and in chiral materials, as well as for modeling high-energy processes at hadron colliders.
