标题： 手性固体中的电荷输运作为寻找暗物质信号的可能工具 显示英文标题

标题： Charge transport in chiral solids as a possible tool in search of dark matter signals

摘要： 随着现有的在实验室实验中直接探测暗物质粒子的技术持续产生负面信号，研究界认为需要考虑新的方法，包括那些依赖于具有非平凡量子性质的凝聚态系统的方法。 例如，在固体的输运特性中寻找暗物质的特征将是探测我们宇宙中这一难以捉摸的质量成分的重要一步。 作为这一方向的第一步，我们最近推导出了考虑两个耦合的$U(1)$-规范场的修改后的动力学方程，其中一个为标准的麦克斯韦电磁场，另一个对应于暗物质领域。 由此得到的玻尔兹曼动力学方程由于与可见物质领域和暗物质领域规范场耦合的贝里曲率而被修改。 拓扑物质中的线性和非线性纵向和/或霍尔电流可能表明暗粒子诱导的电磁场的存在。 使用适当设计的共振腔来增强电场可能有助于实现这一目标。 保守估计表明，该技术应具有约$10^{-9}$或更好的灵敏度，并可能有助于填补XENON1T和光环探测实验之间的空白。 显示英文摘要

摘要： As the existing techniques to directly detect dark matter particles in laboratory experiments continue to produce negative signals, the research community considers novel approaches including those relying on condensed matter systems with non-trivial quantum properties. For example, finding signatures of dark matter in transport characteristics of solids would be an important step on the road to detect this illusive component of the mass of our Universe. As a first step in this direction we have recently derived the modified kinetic equation taking into account two coupled $U(1)$-gauge fields, one being the standard Maxwell electromagnetic field and other corresponding to the dark sector. The resulting Boltzmann kinetic equation is modified by the Berry curvature which couples to both visible and dark sector gauge fields. The linear and nonlinear longitudinal and/or Hall currents in topological matter may signal the existence of dark particle induced electromagnetic fields. The usage of appropriately designed resonant cavity to enhance the electric field may help to reach the goal. The conservative estimates show that the technique should have the sensitivity of the order of $10^{-9}$ or better and may help to partially fill the gap between XENON1T and haloscope experiments.