磁电场的量子化
Quantization of magnetoelectric fields
摘要：
量子相干性涉及宏观自由度，并且发生在远大于单个原子的系统中，是现代物理学的热门领域之一。由于材料的色散，宏观量子电动力学的唯象方法，其中没有正则表达式的尝试，使用。当必须考虑材料结构的几何形状时，问题变得更加复杂。磁饱和准二维铁氧体圆盘中的磁偶极模（MDM）振荡是宏观量子化状态。在这种亚铁磁结构中，电子自旋位置上的长程偶极偶极关联可以用系统整体的集体激发来处理。MDM铁氧体圆盘附近的近场具有空间和时间对称性破缺。这种MDM起源的场，称为磁电（ME）场，携带自旋和轨道角动量。由于独特的拓扑结构，ME场不同于自由空间电磁场。ME场是真空中的量子涨落。我们把这些量子化状态称为ME光子。没有虚拟的电磁光子。我们发现，能量，自旋和轨道角动量的MDM振荡构成的关键物理量，表征ME场的配置。我们表明，真空可以诱导一个MDM铁氧体磁盘，金属壁，和电介质样品之间的卡西米尔扭矩。
英文摘要：
The effect of quantum coherence involving macroscopic degree of freedom, and occurring in systems far larger than individual atoms are one of the topical fields in modern physics. Because of material dispersion, a phenomenological approach to macroscopic quantum electrodynamics, where no canonical formulation is attempted, is used. The problem becomes more complicated when geometrical forms of a material structure have to be taken into consideration. Magnetic dipolar mode (MDM) oscillations in a magnetically saturated quasi 2D ferrite disk are macroscopically quantized states. In this ferrimagnetic structure, long range dipole dipole correlation in positions of electron spins can be treated in terms of collective excitations of a system as a whole. The near fields in the proximity of a MDM ferrite disk have space and time symmetry breakings. Such MDM-originated fields, called magnetoelectric (ME) fields,carry both spin and orbital angular momentums. By virtue of unique topology, ME fields are different from free space electromagnetic (EM) fields. The ME fields are quantum fluctuations in vacuum. We call these quantized states ME photons. There are not virtual EM photons. We show that energy, spin and orbital angular momenta of MDM oscillations constitute the key physical quantities that characterize the ME field configurations. We show that vacuum can induce a Casimir torque between a MDM ferrite disk, metal walls, and dielectric samples.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
