标题： 磁星磁场动力学受手征异常和螺旋性影响 显示英文标题

标题： Magnetar field dynamics shaped by chiral anomalies and helicity

摘要： 手征磁效应（CME），作为一种量子手征反常的宏观表现，诱导电流沿着磁场线流动，促进了手征不对称性和磁场螺旋度之间的相互转换。 尽管有限的电子质量通过自旋翻转过程抑制了手征不对称性，我们证明了CME仍然有效，并在磁星的磁场演化中扮演着重要角色。 磁场螺旋度作为手征不对称性的持续内部来源，介导了磁能在空间尺度上的重新分配，而无需外部能量源。 专注于中子星的外壳，我们展示了这一机制重塑了出生时继承的磁场构型，并且在一百年内，以小型结构为代价，放大了两者扭曲线和偏振大尺度偶极分量（与减速相关）至高达$10^{14}$ 高斯。 我们的研究结果提供了一种微观物理机制，替代传统的流体动力学发电机模型，建立了理解磁星磁场动态的新框架。 显示英文摘要

摘要： The chiral magnetic effect (CME), a macroscopic manifestation of the quantum chiral anomaly, induces currents along magnetic field lines, facilitating mutual conversion between chiral asymmetry and magnetic helicity. Although the finite electron mass suppresses chiral asymmetry through spin-flip processes, we demonstrate that the CME remains effective and plays a significant role in the magnetic field evolution of magnetars. The magnetic helicity acts as a persistent internal source of chiral asymmetry, which mediates the redistribution of magnetic energy across spatial scales, without requiring an external energy source. Focusing on the neutron star crust, we show that this mechanism reshapes the magnetic field configuration inherited at birth and, within a hundred years, amplifies both toroidal and poloidal large-scale dipolar components (relevant for spin-down) up to $10^{14}$ G at the expense of small-scale structures. Our results offer a microphysical mechanism, alternative to traditional hydrodynamic dynamo models, establishing a new framework for understanding magnetar field dynamics.